aca42c6d4c
This change allows ts2phc to be configured to ignore timing updates that have a large offset spike in order to mitigate the resulting timing skew. In some circumstances on realtime systems with high CPU load, the timestamp consumed by ts2phc can be delayed in reaching ts2phc and results in the offset calculation attempting to speed the clock up by a large margin. This change causes ts2phc to ignore updates that would greatly skew the clock when ts2phc is already in a synchronized state. The global configuration option "max_phc_update_skip_cnt" is provided to allow users to specify how many consecutive offset spike incidents will be ignored before adjusting the clock. The default value is 120. The behaviour can be disabled by setting max_phc_update_skip_cnt to 0. This code is ported from a proposed upstream patch found here: https://sourceforge.net/p/linuxptp/mailman/message/44114092/ Test-plan: Pass: Verify linuxptp package build Pass: Deploy ts2phc binary and verify system time sync Pass: Manually trigger offset spike and verify that ts2phc maintains stable time sync Closes-bug: https://bugs.launchpad.net/starlingx/+bug/2059955 Change-Id: I13cd5c3440682ec9256e11449fe62d5fe28f66fa Signed-off-by: Cole Walker <cole.walker@windriver.com>
70 lines
2.1 KiB
Diff
70 lines
2.1 KiB
Diff
From 2f4339ab555fdd90d5c5fd11296d5c17b19c37e3 Mon Sep 17 00:00:00 2001
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From: Andre Mauricio Zelak <andre.zelak@windriver.com>
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Date: Wed, 30 Aug 2023 15:43:42 -0300
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Subject: [PATCH 52/58] Command 'valid sources'
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The 'valid sources' command is used to get a list of interfaces which
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the clock is matching the requirements. The response contains a space
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separated list of interfaces, or "None" when not a single clock is
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matching all the requirements.
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Test plan: valid sources command
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PASS: Verify that a space separated list of interface is returned when
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one or more clocks match the requirements.
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PASS: Verify that the string "None" is returned when not a single clock
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match the requirements.
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Story: 2010723
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Task: 48702
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Signed-off-by: Andre Mauricio Zelak <andre.zelak@windriver.com>
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---
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phc2sys.c | 24 ++++++++++++++++++++++++
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1 file changed, 24 insertions(+)
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diff --git a/phc2sys.c b/phc2sys.c
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index 27ba630..9893675 100644
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--- a/phc2sys.c
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+++ b/phc2sys.c
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@@ -1499,6 +1499,27 @@ static int ha_handle_disable_source_msg(struct phc2sys_private *priv,
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return curlen;
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}
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+static int ha_handle_valid_sources_msg(struct phc2sys_private *priv,
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+ struct config *cfg, char *response, size_t resplen)
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+{
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+ size_t curlen = 0;
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+ struct clock *clock = NULL;
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+
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+ LIST_FOREACH(clock, &priv->clocks, list) {
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+ if (clock_match_ha_requirements(clock, cfg)) {
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+ curlen += snprintf(response + curlen, resplen - curlen,
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+ "%s ", clock->device);
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+ }
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+ }
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+
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+ /* no clock is matching requirements */
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+ if (0 == curlen) {
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+ curlen = snprintf(response, resplen, "None");
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+ }
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+
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+ return curlen;
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+}
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+
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static int ha_com_socket_handle_msg(struct phc2sys_private *priv,
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struct config *cfg)
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{
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@@ -1567,6 +1588,9 @@ static int ha_com_socket_handle_msg(struct phc2sys_private *priv,
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} else if (starts_with("disable source", buffer)) {
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cnt = ha_handle_disable_source_msg(priv, cfg, buffer, response,
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HA_SCK_BUFFER_SIZE);
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+ } else if (strcmp((const char*)buffer, "valid sources") == 0) {
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+ cnt = ha_handle_valid_sources_msg(priv, cfg, response,
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+ HA_SCK_BUFFER_SIZE);
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} else {
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cnt = snprintf((char*)response, HA_SCK_BUFFER_SIZE,
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"Error: Invalid command");
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--
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2.30.2
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