379 lines
9.4 KiB
C
379 lines
9.4 KiB
C
/**
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* @file ptp4l.c
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* @brief PTP Boundary Clock main program
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* @note Copyright (C) 2011 Richard Cochran <richardcochran@gmail.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include <signal.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <linux/net_tstamp.h>
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#include "clock.h"
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#include "config.h"
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#include "pi.h"
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#include "print.h"
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#include "raw.h"
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#include "sk.h"
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#include "transport.h"
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#include "udp6.h"
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#include "util.h"
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#include "version.h"
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int assume_two_step = 0;
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static int running = 1;
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static struct config cfg_settings = {
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.dds = {
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.dds = {
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.flags = DDS_TWO_STEP_FLAG,
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.priority1 = 128,
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.clockQuality.clockClass = 248,
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.clockQuality.clockAccuracy = 0xfe,
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.clockQuality.offsetScaledLogVariance = 0xffff,
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.priority2 = 128,
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.domainNumber = 0,
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},
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.free_running = 0,
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.freq_est_interval = 1,
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.stats_interval = 0,
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.kernel_leap = 1,
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.clock_desc = {
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.productDescription = {
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.max_symbols = 64,
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.text = ";;",
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.length = 2,
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},
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.revisionData = {
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.max_symbols = 32,
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.text = ";;",
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.length = 2,
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},
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.userDescription = { .max_symbols = 128 },
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.manufacturerIdentity = { 0, 0, 0 },
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},
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},
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.pod = {
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.logAnnounceInterval = 1,
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.logSyncInterval = 0,
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.logMinDelayReqInterval = 0,
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.logMinPdelayReqInterval = 0,
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.announceReceiptTimeout = 3,
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.transportSpecific = 0,
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.path_trace_enabled = 0,
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.follow_up_info = 0,
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.freq_est_interval = 1,
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/* Default to very a large neighborPropDelay threshold */
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.neighborPropDelayThresh = 20000000,
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},
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.timestamping = TS_HARDWARE,
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.dm = DM_E2E,
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.transport = TRANS_UDP_IPV4,
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.assume_two_step = &assume_two_step,
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.tx_timestamp_timeout = &sk_tx_timeout,
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.clock_servo = CLOCK_SERVO_PI,
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.pi_proportional_const = &configured_pi_kp,
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.pi_integral_const = &configured_pi_ki,
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.pi_offset_const = &configured_pi_offset,
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.ptp_dst_mac = ptp_dst_mac,
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.p2p_dst_mac = p2p_dst_mac,
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.udp6_scope = &udp6_scope,
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.print_level = LOG_INFO,
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.use_syslog = 1,
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.verbose = 0,
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.cfg_ignore = 0,
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};
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static void handle_int_quit_term(int s)
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{
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pr_notice("caught signal %d", s);
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running = 0;
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}
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static void usage(char *progname)
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{
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fprintf(stderr,
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"\nusage: %s [options]\n\n"
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" Delay Mechanism\n\n"
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" -A Auto, starting with E2E\n"
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" -E E2E, delay request-response (default)\n"
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" -P P2P, peer delay mechanism\n\n"
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" Network Transport\n\n"
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" -2 IEEE 802.3\n"
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" -4 UDP IPV4 (default)\n"
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" -6 UDP IPV6\n\n"
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" Time Stamping\n\n"
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" -H HARDWARE (default)\n"
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" -S SOFTWARE\n"
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" -L LEGACY HW\n\n"
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" Other Options\n\n"
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" -f [file] read configuration from 'file'\n"
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" -i [dev] interface device to use, for example 'eth0'\n"
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" (may be specified multiple times)\n"
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" -p [dev] PTP hardware clock device to use, default auto\n"
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" (ignored for SOFTWARE/LEGACY HW time stamping)\n"
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" -s slave only mode (overrides configuration file)\n"
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" -l [num] set the logging level to 'num'\n"
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" -m print messages to stdout\n"
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" -q do not print messages to the syslog\n"
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" -v prints the software version and exits\n"
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" -h prints this message and exits\n"
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"\n",
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progname);
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}
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int main(int argc, char *argv[])
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{
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char *config = NULL, *req_phc = NULL, *progname;
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int c, i;
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struct interface *iface = cfg_settings.iface;
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char *ports[MAX_PORTS];
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int nports = 0;
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int *cfg_ignore = &cfg_settings.cfg_ignore;
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enum delay_mechanism *dm = &cfg_settings.dm;
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enum transport_type *transport = &cfg_settings.transport;
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enum timestamp_type *timestamping = &cfg_settings.timestamping;
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struct clock *clock;
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struct defaultDS *ds = &cfg_settings.dds.dds;
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int phc_index = -1, required_modes = 0;
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if (SIG_ERR == signal(SIGINT, handle_int_quit_term)) {
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fprintf(stderr, "cannot handle SIGINT\n");
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return -1;
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}
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if (SIG_ERR == signal(SIGQUIT, handle_int_quit_term)) {
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fprintf(stderr, "cannot handle SIGQUIT\n");
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return -1;
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}
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if (SIG_ERR == signal(SIGTERM, handle_int_quit_term)) {
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fprintf(stderr, "cannot handle SIGTERM\n");
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return -1;
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}
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/* Set fault timeouts to a default value */
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for (i = 0; i < FT_CNT; i++) {
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cfg_settings.pod.flt_interval_pertype[i].type = FTMO_LOG2_SECONDS;
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cfg_settings.pod.flt_interval_pertype[i].val = 4;
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}
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/* Process the command line arguments. */
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progname = strrchr(argv[0], '/');
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progname = progname ? 1+progname : argv[0];
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while (EOF != (c = getopt(argc, argv, "AEP246HSLf:i:p:sl:mqvh"))) {
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switch (c) {
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case 'A':
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*dm = DM_AUTO;
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*cfg_ignore |= CFG_IGNORE_DM;
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break;
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case 'E':
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*dm = DM_E2E;
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*cfg_ignore |= CFG_IGNORE_DM;
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break;
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case 'P':
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*dm = DM_P2P;
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*cfg_ignore |= CFG_IGNORE_DM;
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break;
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case '2':
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*transport = TRANS_IEEE_802_3;
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*cfg_ignore |= CFG_IGNORE_TRANSPORT;
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break;
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case '4':
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*transport = TRANS_UDP_IPV4;
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*cfg_ignore |= CFG_IGNORE_TRANSPORT;
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break;
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case '6':
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*transport = TRANS_UDP_IPV6;
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*cfg_ignore |= CFG_IGNORE_TRANSPORT;
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break;
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case 'H':
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*timestamping = TS_HARDWARE;
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*cfg_ignore |= CFG_IGNORE_TIMESTAMPING;
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break;
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case 'S':
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*timestamping = TS_SOFTWARE;
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*cfg_ignore |= CFG_IGNORE_TIMESTAMPING;
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break;
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case 'L':
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*timestamping = TS_LEGACY_HW;
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*cfg_ignore |= CFG_IGNORE_TIMESTAMPING;
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break;
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case 'f':
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config = optarg;
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break;
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case 'i':
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ports[nports] = optarg;
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nports++;
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break;
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case 'p':
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req_phc = optarg;
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break;
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case 's':
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ds->flags |= DDS_SLAVE_ONLY;
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*cfg_ignore |= CFG_IGNORE_SLAVEONLY;
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break;
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case 'l':
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cfg_settings.print_level = atoi(optarg);
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*cfg_ignore |= CFG_IGNORE_PRINT_LEVEL;
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break;
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case 'm':
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cfg_settings.verbose = 1;
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*cfg_ignore |= CFG_IGNORE_VERBOSE;
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break;
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case 'q':
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cfg_settings.use_syslog = 0;
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*cfg_ignore |= CFG_IGNORE_USE_SYSLOG;
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break;
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case 'v':
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version_show(stdout);
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return 0;
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case 'h':
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usage(progname);
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return 0;
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case '?':
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usage(progname);
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return -1;
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default:
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usage(progname);
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return -1;
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}
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}
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if (config && (c = config_read(config, &cfg_settings))) {
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return c;
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}
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if (ds->flags & DDS_SLAVE_ONLY) {
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ds->clockQuality.clockClass = 255;
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}
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print_set_progname(progname);
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print_set_verbose(cfg_settings.verbose);
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print_set_syslog(cfg_settings.use_syslog);
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print_set_level(cfg_settings.print_level);
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for (i = 0; i < nports; i++) {
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if (config_create_interface(ports[i], &cfg_settings) < 0) {
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fprintf(stderr, "too many interfaces\n");
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return -1;
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}
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}
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if (!cfg_settings.nports) {
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fprintf(stderr, "no interface specified\n");
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usage(progname);
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return -1;
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}
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if (!(ds->flags & DDS_TWO_STEP_FLAG)) {
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switch (*timestamping) {
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case TS_SOFTWARE:
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case TS_LEGACY_HW:
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fprintf(stderr, "one step is only possible "
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"with hardware time stamping\n");
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return -1;
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case TS_HARDWARE:
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*timestamping = TS_ONESTEP;
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break;
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case TS_ONESTEP:
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break;
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}
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}
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switch (*timestamping) {
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case TS_SOFTWARE:
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required_modes |= SOF_TIMESTAMPING_TX_SOFTWARE |
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SOF_TIMESTAMPING_RX_SOFTWARE |
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SOF_TIMESTAMPING_SOFTWARE;
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break;
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case TS_LEGACY_HW:
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required_modes |= SOF_TIMESTAMPING_TX_HARDWARE |
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SOF_TIMESTAMPING_RX_HARDWARE |
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SOF_TIMESTAMPING_SYS_HARDWARE;
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break;
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case TS_HARDWARE:
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case TS_ONESTEP:
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required_modes |= SOF_TIMESTAMPING_TX_HARDWARE |
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SOF_TIMESTAMPING_RX_HARDWARE |
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SOF_TIMESTAMPING_RAW_HARDWARE;
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break;
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}
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/* check whether timestamping mode is supported. */
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for (i = 0; i < cfg_settings.nports; i++) {
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if (iface[i].ts_info.valid &&
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!(iface[0].ts_info.so_timestamping & required_modes)) {
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fprintf(stderr, "interface '%s' does not support "
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"requested timestamping mode.\n",
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iface[i].name);
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return -1;
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}
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}
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/* determine PHC Clock index */
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if (cfg_settings.dds.free_running) {
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phc_index = -1;
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} else if (*timestamping == TS_SOFTWARE || *timestamping == TS_LEGACY_HW) {
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phc_index = -1;
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} else if (req_phc) {
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if (1 != sscanf(req_phc, "/dev/ptp%d", &phc_index)) {
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fprintf(stderr, "bad ptp device string\n");
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return -1;
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}
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} else if (iface[0].ts_info.valid) {
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phc_index = iface[0].ts_info.phc_index;
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} else {
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fprintf(stderr, "ptp device not specified and\n"
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"automatic determination is not\n"
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"supported. please specify ptp device\n");
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return -1;
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}
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if (phc_index >= 0) {
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pr_info("selected /dev/ptp%d as PTP clock", phc_index);
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}
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if (generate_clock_identity(&ds->clockIdentity, iface[0].name)) {
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fprintf(stderr, "failed to generate a clock identity\n");
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return -1;
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}
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clock = clock_create(phc_index, iface, cfg_settings.nports,
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*timestamping, &cfg_settings.dds,
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cfg_settings.clock_servo);
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if (!clock) {
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fprintf(stderr, "failed to create a clock\n");
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return -1;
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}
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while (running) {
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if (clock_poll(clock))
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break;
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}
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clock_destroy(clock);
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return 0;
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}
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