> -Original Message-
> From: Petr Machata [mailto:pe...@mellanox.com]
> Sent: Tuesday, June 11, 2019 9:35 AM
> To: linuxptp-devel@lists.sourceforge.net
> Cc: Petr Machata ; Keller, Jacob E
> ; Geva, Erez
> Subject: [PATCH v4] sk: Recognize HWTSTAMP_FILTER_SOME
>
> struct
> -Original Message-
> From: Geva, Erez [mailto:erez.geva@siemens.com]
> Sent: Tuesday, June 11, 2019 7:32 AM
> To: Petr Machata
> Cc: linuxptp-devel@lists.sourceforge.net
> Subject: Re: [Linuxptp-devel] [PATCH v2] sk: Recognize HWTSTAMP_FILTER_SOME
>
> If you ask to stamp all
struct hwtstamp_config.rx_filter passed to SIOCSHWTSTAMP can be updated by
the kernel with the value of HWTSTAMP_FILTER_SOME. That indicates that all
requested packets will be timestamped, and some others as well.
Update hwts_init() to recognize this as a valid response in HWTS_FILTER_NORMAL
Geva, Erez writes:
> It make sense for HWTS_FILTER_NORMAL.
>
> But for HWTSTAMP_FILTER_ALL, it does not make sense to get
> HWTSTAMP_FILTER_SOME.
> Some of what? You ask for all!
Yeah, there isn't really anything besides ALL thas this could timestamp.
I'll just modify the HWTS_FILTER_NORMAL
If you ask to stamp all packets with HWTSTAMP_FILTER_ALL, then you can not get
a reply of "plus some others".
You ask for all, which more do you think you can get?
It does make sense as a reply in case of HWTS_FILTER_FULL.
enum hwtstamp_rx_filters {
/* time stamp any incoming packet */
Hello Sanjay.
“Richard had suggested that this could be done by feeding GPS PPS into the NIC”
I have modified the FEC driver for iMX6 to bring in the GPS-PPS. I’m able to
track GPS by +/- 25ns (given that the GPS receiver is only that stable)
Using a modified version of phy2sys to keep
Hi,
It make sense for HWTS_FILTER_NORMAL.
But for HWTSTAMP_FILTER_ALL, it does not make sense to get
HWTSTAMP_FILTER_SOME.
Some of what? You ask for all!
Neither can you use rx_filter in this case, since it was not used in the
SIOCSHWTSTAMP request.
Erez
Geva, Erez writes:
> Hi,
>
> The "cfg.rx_filter != HWTSTAMP_FILTER_ALL)) { "
> line catch both filter mode is "HWTS_FILTER_FULL, and the fact that the
> filter could is in a higher state for both HWTS_FILTER_NORMAL,
> HWTS_FILTER_CHECK.
>
> Could you be more specific what does the
On Tue, Jun 11, 2019 at 09:44:32AM -0400, Sanjay Bhandari wrote:
> > What I don't understand is how is your FPGA different from a NIC. In both
> cases there is a clock which is timestamping packets and PPS on an input
> pin, right?
>
> Correct. I may have overstated the case for WHERE the
> What I don't understand is how is your FPGA different from a NIC. In both
cases there is a clock which is timestamping packets and PPS on an input
pin, right?
Correct. I may have overstated the case for WHERE the hardware timestamping
happens (in the NIC or elsewhere). The real issue is about
On Tue, Jun 11, 2019 at 09:30:53AM -0400, Sanjay Bhandari wrote:
> > How is timestamping GPS PPS different from timestamping external events?
> If the driver could provide this feature using the existing
> PHC API, I think that would be the best approach.
>
> It's not. I am saying that to train
> How is timestamping GPS PPS different from timestamping external events?
If the driver could provide this feature using the existing
PHC API, I think that would be the best approach.
It's not. I am saying that to train the PHC to GPS time, we need to
timestamp the GPS PPS with the PHC clock
struct hwtstamp_config.rx_filter passed to SIOCSHWTSTAMP can be updated by
the kernel with the value of HWTSTAMP_FILTER_SOME. That indicates that all
requested packets will be timestamped, and some others as well.
Update hwts_init() to recognize this as a valid response, instead of
rejecting it
On Mon, Jun 10, 2019 at 08:17:05AM -0400, Sanjay Bhandari wrote:
> Has it been considered adding a chrony like refclock SOCK interface (
> https://is.gd/skln7i) to either ptp4l or phc2sys, where samples could be
> fed from an external source like the GPS (or other) to set the PHC? What
> are the
Hi,
The "cfg.rx_filter != HWTSTAMP_FILTER_ALL)) { "
line catch both filter mode is "HWTS_FILTER_FULL, and the fact that the
filter could is in a higher state for both HWTS_FILTER_NORMAL,
HWTS_FILTER_CHECK.
Could you be more specific what does the HWTSTAMP_FILTER_SOME means?
For me, the
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