Add a utility program to set driver level time stamping policy.
Signed-off-by: Richard Cochran <richardcochran@gmail.com>master
Richard Cochran
parent
af3cbb5fbd
commit
4b10792002
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@ -0,0 +1,142 @@
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/**
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* @file hwstamp_ctl.c
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* @brief Utility program to set time stamping policy at the driver level.
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* @note Copyright (C) 2012 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 <errno.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 <sys/ioctl.h>
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#include <unistd.h>
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#include <arpa/inet.h>
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#include <linux/net_tstamp.h>
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#include <linux/sockios.h>
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#include <net/if.h>
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static void usage(char *progname)
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{
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fprintf(stderr,
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"\n"
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"usage: %s [options]\n\n"
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" -h prints this message and exits\n"
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" -i [device] interface device to use, for example 'eth0'\n"
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" -r [%d..%d] select receive time stamping:\n"
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"\t\t%2d time stamp no incoming packet at all\n"
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"\t\t%2d time stamp any incoming packet\n"
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"\t\t%2d (reserved value)\n"
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"\t\t%2d PTP v1, UDP, any kind of event packet\n"
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"\t\t%2d PTP v1, UDP, Sync packet\n"
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"\t\t%2d PTP v1, UDP, Delay_req packet\n"
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"\t\t%2d PTP v2, UDP, any kind of event packet\n"
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"\t\t%2d PTP v2, UDP, Sync packet\n"
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"\t\t%2d PTP v2, UDP, Delay_req packet\n"
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"\t\t%2d 802.AS1, Ethernet, any kind of event packet\n"
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"\t\t%2d 802.AS1, Ethernet, Sync packet\n"
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"\t\t%2d 802.AS1, Ethernet, Delay_req packet\n"
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"\t\t%2d PTP v2/802.AS1, any layer, any kind of event packet\n"
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"\t\t%2d PTP v2/802.AS1, any layer, Sync packet\n"
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"\t\t%2d PTP v2/802.AS1, any layer, Delay_req packet\n"
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" -t [%d|%d] disable or enable transmit time stamping\n"
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"\n",
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progname,
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HWTSTAMP_FILTER_NONE, HWTSTAMP_FILTER_PTP_V2_DELAY_REQ,
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HWTSTAMP_FILTER_NONE,
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HWTSTAMP_FILTER_ALL,
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HWTSTAMP_FILTER_SOME,
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HWTSTAMP_FILTER_PTP_V1_L4_EVENT,
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HWTSTAMP_FILTER_PTP_V1_L4_SYNC,
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HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ,
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HWTSTAMP_FILTER_PTP_V2_L4_EVENT,
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HWTSTAMP_FILTER_PTP_V2_L4_SYNC,
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HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ,
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HWTSTAMP_FILTER_PTP_V2_L2_EVENT,
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HWTSTAMP_FILTER_PTP_V2_L2_SYNC,
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HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ,
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HWTSTAMP_FILTER_PTP_V2_EVENT,
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HWTSTAMP_FILTER_PTP_V2_SYNC,
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HWTSTAMP_FILTER_PTP_V2_DELAY_REQ,
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HWTSTAMP_TX_OFF,
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HWTSTAMP_TX_ON);
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}
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int main(int argc, char *argv[])
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{
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struct ifreq ifreq;
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struct hwtstamp_config cfg;
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char *device = NULL, *progname;
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int c, err, fd, rxopt = HWTSTAMP_FILTER_NONE, txopt = HWTSTAMP_TX_OFF;
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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, "hi:r:t:"))) {
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switch (c) {
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case 'i':
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device = optarg;
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break;
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case 'r':
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rxopt = atoi(optarg);
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break;
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case 't':
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txopt = atoi(optarg);
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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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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 (!device) {
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usage(progname);
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return -1;
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}
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if (rxopt < HWTSTAMP_FILTER_NONE ||
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rxopt > HWTSTAMP_FILTER_PTP_V2_DELAY_REQ ||
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txopt < HWTSTAMP_TX_OFF || txopt > HWTSTAMP_TX_ON) {
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usage(progname);
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return -1;
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}
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memset(&ifreq, 0, sizeof(ifreq));
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memset(&cfg, 0, sizeof(cfg));
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strncpy(ifreq.ifr_name, device, sizeof(ifreq.ifr_name));
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ifreq.ifr_data = (void *) &cfg;
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cfg.tx_type = txopt;
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cfg.rx_filter = rxopt;
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fd = socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP);
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if (fd < 0) {
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perror("socket");
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return -1;
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}
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err = ioctl(fd, SIOCSHWTSTAMP, &ifreq);
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if (err < 0)
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perror("SIOCSHWTSTAMP failed");
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printf("tx_type %d\n" "rx_filter %d\n", cfg.tx_type, cfg.rx_filter);
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return err ? errno : 0;
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}
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6
makefile
6
makefile
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@ -27,18 +27,20 @@ PRG = ptp4l phc2sys
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OBJ = bmc.o clock.o config.o fsm.o ptp4l.o mave.o msg.o phc.o pi.o port.o \
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print.o servo.o tmtab.o transport.o udp.o util.o
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OBJECTS = $(OBJ) phc2sys.o
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OBJECTS = $(OBJ) phc2sys.o hwstamp_ctl.o
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SRC = $(OBJECTS:.o=.c)
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DEPEND = $(OBJECTS:.o=.d)
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srcdir := $(dir $(lastword $(MAKEFILE_LIST)))
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VPATH = $(srcdir)
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all: ptp4l phc2sys
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all: ptp4l phc2sys hwstamp_ctl
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ptp4l: $(OBJ)
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phc2sys: phc2sys.o
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hwstamp_ctl: hwstamp_ctl.o
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clean:
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rm -f $(OBJECTS) $(DEPEND)
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