250 lines
6.2 KiB
C
250 lines
6.2 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 <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 "clock.h"
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#include "config.h"
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#include "print.h"
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#include "sk.h"
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#include "transport.h"
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#define DEFAULT_PHC "/dev/ptp0"
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int sk_tx_retries = 2; /*see sk.c*/
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double configured_pi_kp, configured_pi_ki; /*see pi.c*/
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extern unsigned char ptp_dst_mac[]; /*see raw.c*/
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extern unsigned char p2p_dst_mac[]; /*see raw.c*/
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static int running = 1;
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static struct defaultDS ds;
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static struct port_defaults pod;
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static struct config cfg_settings;
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static int generate_clock_identity(struct ClockIdentity *ci, char *name)
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{
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unsigned char mac[6];
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if (sk_interface_macaddr(name, mac, sizeof(mac)))
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return -1;
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ci->id[0] = mac[0];
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ci->id[1] = mac[1];
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ci->id[2] = mac[2];
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ci->id[3] = 0xFF;
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ci->id[4] = 0xFE;
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ci->id[5] = mac[3];
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ci->id[6] = mac[4];
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ci->id[7] = mac[5];
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return 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 (per interface)\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 (per interface)\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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" -r HARDWARE (default)\n"
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" -s SOFTWARE\n"
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" -z 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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" -h prints this message and exits\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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" -l [num] set the logging level to 'num'\n"
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" -m slave only mode (overrides configuration file)\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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" -q quiet mode, do not use syslog(3)\n"
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" -v verbose mode, print messages to stdout\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, nports = 0, slaveonly = 0;
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struct interface iface[MAX_PORTS];
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enum delay_mechanism dm = DM_E2E;
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enum transport_type transport = TRANS_UDP_IPV4;
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enum timestamp_type timestamping = TS_HARDWARE;
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struct clock *clock;
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int phc_index = -1;
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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, "246AEf:hi:l:mPp:qrsvz"))) {
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switch (c) {
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case '2':
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transport = TRANS_IEEE_802_3;
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break;
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case '4':
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transport = TRANS_UDP_IPV4;
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break;
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case '6':
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transport = TRANS_UDP_IPV6;
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break;
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case 'A':
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dm = DM_AUTO;
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break;
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case 'E':
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dm = DM_E2E;
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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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if (nports < MAX_PORTS) {
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iface[nports].name = optarg;
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iface[nports].dm = dm;
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iface[nports].transport = transport;
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nports++;
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} else {
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fprintf(stderr, "too many interfaces\n");
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return -1;
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}
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break;
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case 'l':
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print_set_level(atoi(optarg));
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break;
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case 'm':
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slaveonly = 1;
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break;
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case 'P':
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dm = DM_P2P;
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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 'q':
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print_no_syslog();
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break;
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case 'r':
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timestamping = TS_HARDWARE;
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break;
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case 's':
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timestamping = TS_SOFTWARE;
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break;
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case 'v':
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print_verbose();
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break;
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case 'z':
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timestamping = TS_LEGACY_HW;
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break;
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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 (!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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for (i = 0; i < nports; i++) {
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iface[i].timestamping = timestamping;
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}
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/* determine PHC Clock index */
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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 (sk_interface_phc(iface[0].name, &phc_index)) {
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fprintf(stderr, "get_ts_info not supported\n"
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"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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ds.slaveOnly = FALSE;
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ds.priority1 = 128;
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ds.clockQuality.clockClass = 248;
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ds.clockQuality.clockAccuracy = 0xfe;
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ds.clockQuality.offsetScaledLogVariance = 0xffff;
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ds.priority2 = 128;
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pod.logAnnounceInterval = 1;
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pod.logSyncInterval = 0;
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pod.logMinDelayReqInterval = 0;
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pod.announceReceiptTimeout = 3;
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pod.transportSpecific = 0;
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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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cfg_settings.dds = &ds;
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cfg_settings.pod = &pod;
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cfg_settings.tx_timestamp_retries = &sk_tx_retries;
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cfg_settings.pi_proportional_const = &configured_pi_kp;
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cfg_settings.pi_integral_const = &configured_pi_ki;
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cfg_settings.ptp_dst_mac = ptp_dst_mac;
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cfg_settings.p2p_dst_mac = p2p_dst_mac;
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if (config && config_read(config, &cfg_settings)) {
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fprintf(stderr, "failed to read configuration file\n");
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return -1;
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}
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if (slaveonly) {
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ds.slaveOnly = TRUE;
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ds.clockQuality.clockClass = 255;
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}
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clock = clock_create(phc_index, iface, nports, &ds, &pod);
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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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return 0;
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}
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