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pmc: Documentation for long opts / cfg file

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[ RC - Correct the punctuation and abbreviation. ]

Signed-off-by: Peter Schneider <peter@psch.de>
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
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Peter Schneider 2018-03-22 00:28:34 +01:00 committed by Richard Cochran
parent c96dea72f1
commit c4e5879233
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pmc.8
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@ -5,6 +5,8 @@ pmc \- PTP management client
.SH SYNOPSIS
.B pmc
[
.BI \-f " config-file"
] [
.B \-2
|
.B \-4
@ -23,6 +25,8 @@ pmc \- PTP management client
] [
.BI \-t " transport-specific-field"
] [
.I long-options
] [
.B \-v
] [
.B \-z
@ -97,6 +101,61 @@ pmc program normally sends GET requests with properly formed TLV
values. This option enables the legacy option of sending zero
length TLV values instead.
.SH LONG OPTIONS
Each and every configuration file option (see below in sections
.BR PROGRAM\ OPTIONS
and
.BR PORT\ OPTIONS )
may also appear
as a "long" style command line argument. For example, the transportSpecific
option may be set using either of these two forms:
.RS
\f(CW\-\-transportSpecific 1 \-\-transportSpecific=1\fP
.RE
Option values given on the command line override values in the global
section of the configuration file (which, in turn, overrides default
values).
.SH CONFIGURATION FILE
The configuration file is divided into sections. Each section starts with a
line containing its name enclosed in brackets and it follows with settings.
Each setting is placed on a separate line, it contains the name of the
option and the value separated by whitespace characters. Empty lines and lines
starting with # are ignored.
The global section (indicated as
.BR [global] )
sets the global program options as well as the default port specific options.
Other sections are port specific sections and they override the default port
options. The name of the section is the name of the configured port (e.g.
.BR [eth0]
).
.SH PROGRAM OPTIONS
.TP
.B domainNumber
The domain attribute of the local clock. The default is 0.
.SH PORT OPTIONS
.TP
.B transportSpecific
The transport specific field. Must be in the range 0 to 255.
The default is 0.
.TP
.B network_transport
Select the network transport. Possible values are UDPv4, UDPv6 and L2. The default
is UDPv4.
.TP
.B ptp_dst_mac
The MAC address to which PTP management messages should be sent. Relevant only with L2 transport. The default is 01:1B:19:00:00:00.
.SH MANAGEMENT IDS
.TP
@ -148,5 +207,17 @@ length TLV values instead.
.TP
.B VERSION_NUMBER
.SH WARNING
Be cautious when the same configuration file is used for both ptp4l
and pmc. Keep in mind that values specified in the configuration file
take precedence over their default values. If a certain option which
is common to ptp4l and pmc is specified to a non-default value in the
configuration file (e.g. for ptp4l), then this non-default value
applies also for pmc. This might be not what is expected.
To avoid securely these unexpected behaviour, different configuration files
for ptp4l and pmc are recommended.
.SH SEE ALSO
.BR ptp4l (8)