Re: [Linuxptp-devel] Transport specific in UDP

2018-02-19 Thread Richard Cochran
On Fri, Feb 16, 2018 at 12:18:16PM +0100, Petr Kulhavy wrote: > that sounds like a good solution. Are you going to include it in the > mainstream? If it works for you, then yes. Thanks, Richard -- Check out the vibrant t

Re: [Linuxptp-devel] Transport specific in UDP

2018-02-18 Thread Petr Kulhavy
Hi Richard, that sounds like a good solution. Are you going to include it in the mainstream? Regards Petr On 13/02/18 19:19, Richard Cochran wrote: On Tue, Feb 13, 2018 at 06:04:55PM +0100, Petr Kulhavy wrote: Let me develop this idea further. What about splitting the transportSpecific into

Re: [Linuxptp-devel] Transport specific in UDP

2018-02-13 Thread Richard Cochran
On Tue, Feb 13, 2018 at 06:04:55PM +0100, Petr Kulhavy wrote: > Let me develop this idea further. What about splitting the transportSpecific > into the two nibbles, where lower nibble is as now and the upper nibble is a > mask telling which bits to ignore on RX. I think it would less confusing to

Re: [Linuxptp-devel] Transport specific in UDP

2018-02-13 Thread Petr Kulhavy
Hi Richard, On 13/02/18 17:27, Richard Cochran wrote: On Tue, Feb 13, 2018 at 10:50:23AM +0100, brain wrote: Dante sends ts=8 and other manufacturers send ts=0. Unless Linuxptp properly implements the ts handling (i.e. ignoring bits 1-3) it cannot work in such networks. Simply because fix-conf

Re: [Linuxptp-devel] Transport specific in UDP

2018-02-13 Thread Richard Cochran
On Tue, Feb 13, 2018 at 10:50:23AM +0100, brain wrote: > Dante sends ts=8 and other manufacturers send ts=0. Unless Linuxptp > properly implements the ts handling (i.e. ignoring bits 1-3) it > cannot work in such networks. Simply because fix-configuring to one > value (Dante or non-Dante) filters o

Re: [Linuxptp-devel] Transport specific in UDP

2018-02-13 Thread brain
xptp-devel@lists.sourceforge.net Předmět: Re: [Linuxptp-devel] Transport specific in UDP On Mon, Feb 12, 2018 at 08:05:36PM +0100, Petr Kulhavy wrote: > As you probably know, it is closed. I don't know very much about it, and that is why I asked.  Maybe there is a good reason to set these bits.  If dante ne

Re: [Linuxptp-devel] Transport specific in UDP

2018-02-12 Thread Richard Cochran
On Mon, Feb 12, 2018 at 08:05:36PM +0100, Petr Kulhavy wrote: > As you probably know, it is closed. I don't know very much about it, and that is why I asked. Maybe there is a good reason to set these bits. If dante networks use value X, then the easiest and most logical way to inter-operate is t

Re: [Linuxptp-devel] Transport specific in UDP

2018-02-12 Thread Petr Kulhavy
On 12/02/18 19:12, Richard Cochran wrote: On Mon, Feb 12, 2018 at 08:12:38AM +0100, brain wrote: I understand that you might find this requirement to be pointless. However in protocols it is not uncommon that certain bits are reserved for future use. In order to provide forward compatible implem

Re: [Linuxptp-devel] Transport specific in UDP

2018-02-12 Thread Richard Cochran
On Mon, Feb 12, 2018 at 08:12:38AM +0100, brain wrote: > I understand that you might find this requirement to be > pointless. However in protocols it is not uncommon that certain bits > are reserved for future use. In order to provide forward compatible > implementations it is a common practice to

Re: [Linuxptp-devel] Transport specific in UDP

2018-02-11 Thread brain
-devel] Transport specific in UDP On Sun, Feb 11, 2018 at 05:55:25PM +0100, Petr Kulhavy wrote: > It seems linuxptp does not comply to the IEEE1588-2008 standard when it > comes to processing of the transport specific field in UDP transport. > > The Annex D.4 of the standard says "

Re: [Linuxptp-devel] Transport specific in UDP

2018-02-11 Thread Richard Cochran
On Sun, Feb 11, 2018 at 05:55:25PM +0100, Petr Kulhavy wrote: > It seems linuxptp does not comply to the IEEE1588-2008 standard when it > comes to processing of the transport specific field in UDP transport. > > The Annex D.4 of the standard says "bit 1-3, reserved, The bit shall be > transmitted

[Linuxptp-devel] Transport specific in UDP

2018-02-11 Thread Petr Kulhavy
Hi, It seems linuxptp does not comply to the IEEE1588-2008 standard when it comes to processing of the transport specific field in UDP transport. The Annex D.4 of the standard says "bit 1-3, reserved, The bit shall be transmitted as zero and ignored by the receiver". Linuxptp does not ignore