This adds two example config files to instantate a gPTP domain 0 instance
that hosts a CMLDS Link Port (run_cmlds=1) and a gPTP domain 1 instance
that invokes the CMLDS using the COMMON_P2P delay mechanism.
Signed-off-by: Kishen Maloor
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configs/gPTP-cmlds.cfg | 34
This patch series presents a functional implementation of the
Common Mean Link Delay Service (CMLDS).
CMLDS is optional in IEEE 1588-2019/clause 16.6, and mandatory in
the IEEE 802.1AS-2020 PTP Profile/clause 11.2.17 for time-aware systems
that implement multiple domains. Accordingly, this
For ports that are configured with "run_cmlds=1", i.e. CMLDS Link
Ports, this change updates port_pdelay_request(), process_pdelay_req() and
port_peer_delay() to utilize the CMLDS sdoid/domainNumber/portId
along code paths where necessary. It also ensures that
neighborRateRatio is calculated on
port_cmlds_ignore() assesses incoming messages per the following
policy:
* All messages that bear the CMLDS sdoid/domainNumber are directed
to a CMLDS Link Port context and processed by this function. All other
messages go through the regular flow (i.e. port_ignore() and beyond)
based on the the
This change adds COMMON_P2P (IEEE 802.1AS-2020, clause 14.8.5) to the
enumeration of delay mechanisms and incorporates it into existing code
paths pertaining to DM_P2P to (where appropriate) maintain parity with
DM_P2P.
Co-authored-by: Andrew Zaborowski
Signed-off-by: Kishen Maloor
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This change adds 'allowedLostResponses' as a per-port parameter
with a default value of 3 (per IEEE 802.1AS-2011, clause 11.5.3).
(Note that this matches the value of the previously #define'd
ALLOWED_LOST_RESPONSES, so this change does not alter any prevailing
behavior)
It is now configurable to
In a setup with multiple gPTP domains, the Common Mean Link Delay Service
(CMLDS) (IEEE 1588/16.6.3) performs link delay measurements in a single
domain and must (somehow) convey those to other domains. IEEE 1588 does not
specify this interface and flags it as an implementation
detail (IEEE
From: Andrew Zaborowski
This change implements the COMMON_P2P DM by issuing a request
to the CMLDS for CommonMeanLinkDelayInformation upon expiry of
the delay timer and handles the response to assimilate the
received meanPathDelay and NRR.
Signed-off-by: Andrew Zaborowski
---
port.c | 35
This change adds cofig file parameters to configure CMLDS support
and access in PTP instances.
'cmlds_clockIdentity': This global setting assigns a CMLDS
clockIdentity to be used by a ptp4l instance on a PTP node that exposes
CMLDS over one or more links.
'run_cmlds': This per-port setting (0/1)
This change furnishes the plumbing for interacting with CMLDS
Link Ports (i.e. ports with "run_cmlds=1").
It adds internal functions for PTP Ports which employ the
COMMON_P2P delay mechanism to issue requests to a CMLDS Link Port at
MID_CMLDS_INFO_NP and handle the response.
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