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ptp4l: per-port configure settings

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this patch enables the configuration file to define per-port specific
configuration options via the use of simple INI style syntax with headings for
each port created via [device_name] syntax

[ RC - correct scanning of the port string
     - remove '=' from scan format string ]

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
This commit is contained in:
Jacob Keller 2012-08-20 10:57:27 -07:00 committed by Richard Cochran
parent e1d3dc560b
commit 06756e29d2
1 changed files with 63 additions and 3 deletions
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66
config.c
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@ -24,16 +24,24 @@
enum config_section {
GLOBAL_SECTION,
PORT_SECTION,
UNKNOWN_SECTION,
};
static int scan_mode(const char *s, enum config_section *section)
static int scan_mode(char *s, enum config_section *section)
{
if (0 == strcasecmp(s, "[global]\n")) {
*section = GLOBAL_SECTION;
return 1;
} else if (s[0] == '[') {
*section = UNKNOWN_SECTION;
char c;
*section = PORT_SECTION;
/* Replace square brackets with white space. */
while (0 != (c = *s)) {
if (c == '[' || c == ']')
*s = ' ';
s++;
}
return 1;
} else {
return 0;
@ -90,6 +98,45 @@ static int scan_pod(const char *s, struct port_defaults *pod)
return 0;
}
static void scan_port_line(const char *s, struct config *cfg, int p)
{
char string[1024];
if (scan_pod(s, &cfg->iface[p].pod)) {
/* nothing to do here */
} else if (1 == sscanf(s, " network_transport %1023s", string)) {
if (0 == strcasecmp("L2", string))
cfg->iface[p].transport = TRANS_IEEE_802_3;
else if (0 == strcasecmp("UDPv4", string))
cfg->iface[p].transport = TRANS_UDP_IPV4;
else if (0 == strcasecmp("UDPv6", string))
cfg->iface[p].transport = TRANS_UDP_IPV6;
} else if (1 == sscanf(s, " delay_mechanism %1023s", string)) {
if (0 == strcasecmp("Auto", string))
cfg->iface[p].dm = DM_AUTO;
else if (0 == strcasecmp("E2E", string))
cfg->iface[p].dm = DM_E2E;
else if (0 == strcasecmp("P2P", string))
cfg->iface[p].dm = DM_P2P;
}
}
static void scan_global_line(const char *s, struct config *cfg)
{
double df;
@ -255,6 +302,7 @@ int config_read(char *name, struct config *cfg)
enum config_section current_section = GLOBAL_SECTION;
FILE *fp;
char line[1024];
int current_port;
fp = fopen(name, "r");
@ -264,13 +312,25 @@ int config_read(char *name, struct config *cfg)
}
while (fgets(line, sizeof(line), fp)) {
if (scan_mode(line, &current_section))
if (scan_mode(line, &current_section) ) {
if (current_section == PORT_SECTION) {
char port[17];
if (1 != sscanf(line, " %16s", port)) {
current_section = UNKNOWN_SECTION;
continue;
}
current_port = config_create_interface(port, cfg);
}
continue;
}
switch(current_section) {
case GLOBAL_SECTION:
scan_global_line(line, cfg);
break;
case PORT_SECTION:
scan_port_line(line, cfg, current_port);
break;
default:
continue;
}