linuxptp/config.c

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/**
* @file config.c
* @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 <stdio.h>
#include <string.h>
#include "config.h"
#include "ether.h"
static void scan_line(char *s, struct config *cfg)
{
double df;
int i, val;
Integer8 i8;
UInteger16 u16;
UInteger8 u8;
unsigned char mac[MAC_LEN];
struct defaultDS *dds = &cfg->dds;
struct port_defaults *pod = &cfg->pod;
if (1 == sscanf(s, " twoStepFlag %d", &val)) {
if (val) /* TODO - implement one step */
dds->twoStepFlag = val ? 1 : 0;
} else if (1 == sscanf(s, " slaveOnly %d", &val)) {
dds->slaveOnly = val ? 1 : 0;
} else if (1 == sscanf(s, " priority1 %hhu", &u8)) {
dds->priority1 = u8;
} else if (1 == sscanf(s, " priority2 %hhu", &u8)) {
dds->priority2 = u8;
} else if (1 == sscanf(s, " domainNumber %hhu", &u8)) {
if (u8 < 128)
dds->domainNumber = u8;
} else if (1 == sscanf(s, " clockClass %hhu", &u8)) {
dds->clockQuality.clockClass = u8;
} else if (1 == sscanf(s, " clockAccuracy %hhx", &u8)) {
dds->clockQuality.clockAccuracy = u8;
} else if (1 == sscanf(s, " offsetScaledLogVariance %hx", &u16)) {
dds->clockQuality.offsetScaledLogVariance = u16;
} else if (1 == sscanf(s, " logAnnounceInterval %hhd", &i8)) {
pod->logAnnounceInterval = i8;
} else if (1 == sscanf(s, " logSyncInterval %hhd", &i8)) {
pod->logSyncInterval = i8;
} else if (1 == sscanf(s, " logMinDelayReqInterval %hhd", &i8)) {
pod->logMinDelayReqInterval = i8;
} else if (1 == sscanf(s, " logMinPdelayReqInterval %hhd", &i8)) {
pod->logMinPdelayReqInterval = i8;
} else if (1 == sscanf(s, " announceReceiptTimeout %hhu", &u8)) {
pod->announceReceiptTimeout = u8;
} else if (1 == sscanf(s, " transportSpecific %hhx", &u8)) {
pod->transportSpecific = u8 << 4;
} else if (1 == sscanf(s, " path_trace_enabled %u", &val)) {
pod->path_trace_enabled = val ? 1 : 0;
} else if (1 == sscanf(s, " follow_up_info %u", &val)) {
pod->follow_up_info = val ? 1 : 0;
} else if (1 == sscanf(s, " assume_two_step %u", &val)) {
*cfg->assume_two_step = val ? 1 : 0;
} else if (1 == sscanf(s, " tx_timestamp_retries %u", &val)) {
if (val > 0)
*cfg->tx_timestamp_retries = val;
} else if (1 == sscanf(s, " rx_timestamp_l2only %u", &val)) {
*cfg->rx_timestamp_l2only = val ? 1 : 0;
} else if (1 == sscanf(s, " pi_proportional_const %lf", &df)) {
if (df > 0.0 && df < 1.0)
*cfg->pi_proportional_const = df;
} else if (1 == sscanf(s, " pi_integral_const %lf", &df)) {
if (df > 0.0 && df < 1.0)
*cfg->pi_integral_const = df;
} else if (MAC_LEN == sscanf(s, " ptp_dst_mac %hhx:%hhx:%hhx:%hhx:%hhx:%hhx",
&mac[0], &mac[1], &mac[2], &mac[3], &mac[4], &mac[5])) {
for (i = 0; i < MAC_LEN; i++)
cfg->ptp_dst_mac[i] = mac[i];
} else if (MAC_LEN == sscanf(s, " p2p_dst_mac %hhx:%hhx:%hhx:%hhx:%hhx:%hhx",
&mac[0], &mac[1], &mac[2], &mac[3], &mac[4], &mac[5])) {
for (i = 0; i < MAC_LEN; i++)
cfg->p2p_dst_mac[i] = mac[i];
}
}
int config_read(char *name, struct config *cfg)
{
FILE *fp;
char line[1024];
fp = 0 == strncmp(name, "-", 2) ? stdin : fopen(name, "r");
if (!fp) {
perror("fopen");
return -1;
}
while (fgets(line, sizeof(line), fp)) {
scan_line(line, cfg);
}
fclose(fp);
return 0;
}