Add the main program.
Signed-off-by: Richard Cochran <richardcochran@gmail.com>master
parent
2a8711a125
commit
150897669e
31
clock.h
31
clock.h
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@ -20,6 +20,16 @@
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#define HAVE_CLOCK_H
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#include "ds.h"
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#include "transport.h"
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#define MAX_PORTS 8
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/** Defines a network interface, with PTP options. */
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struct interface {
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char *name;
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enum transport_type transport;
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enum timestamp_type timestamping;
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};
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/** Opaque type. */
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struct clock;
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@ -47,6 +57,20 @@ struct port *clock_best_port(struct clock *c);
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*/
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UInteger8 clock_class(struct clock *c);
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/**
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* Create a clock instance. There can only be one clock in any system,
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* so subsequent calls will destroy the previous clock instance.
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*
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* @param phc PTP hardware clock device to use.
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* Pass NULL to select CLOCK_REALTIME.
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* @param interface An array of network interfaces.
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* @param count The number of elements in @a interfaces.
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* @param ds A pointer to a default data set for the clock.
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* @return A pointer to the single global clock instance.
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*/
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struct clock *clock_create(char *phc, struct interface *iface, int count,
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struct defaultDS *ds);
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/**
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* Obtains a clock's default data set.
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* @param c The clock instance.
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@ -54,4 +78,11 @@ UInteger8 clock_class(struct clock *c);
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*/
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struct dataset *clock_default_ds(struct clock *c);
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/**
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* Poll for events and dispatch them.
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* @param c A pointer to a clock instance obtained with clock_create().
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* @return Zero on success, non-zero otherwise.
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*/
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int clock_poll(struct clock *c);
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#endif
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@ -0,0 +1,161 @@
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/**
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* @file
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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 "print.h"
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#include "transport.h"
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#include "udp.h"
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#define DEFAULT_PHC "/dev/ptp0"
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static int running = 1;
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static struct defaultDS ds;
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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 (udp_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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" 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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" -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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" -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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" -p [dev] PTP hardware clock device to use, default '%s'\n"
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" (ignored when SOFTWARE time stamping is selected)\n\n",
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progname, DEFAULT_PHC);
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}
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int main(int argc, char *argv[])
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{
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char *phc = DEFAULT_PHC, *progname;
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int c, i, nports = 0;
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struct interface iface[MAX_PORTS];
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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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/* 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, "246hi:p:rsz"))) {
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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 'i':
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if (nports < MAX_PORTS) {
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iface[nports++].name = optarg;
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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 'p':
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phc = optarg;
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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 '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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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].transport = transport;
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iface[i].timestamping = timestamping;
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}
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if (timestamping == TS_SOFTWARE) {
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phc = NULL;
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}
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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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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, iface, nports, &ds);
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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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3
makefile
3
makefile
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@ -24,7 +24,8 @@ CFLAGS = -Wall $(INC) $(DEBUG)
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LDFLAGS =
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LDLIBS = -lm -lrt
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PRG = linuxptp
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OBJ = bmc.o fsm.o msg.o phc.o pi.o print.o servo.o transport.o udp.o util.o
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OBJ = bmc.o fsm.o linuxptp.o msg.o phc.o pi.o print.o \
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servo.o transport.o udp.o util.o
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SRC = $(OBJ:.o=.c)
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DEPEND = $(OBJ:.o=.d)
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