starlingx/integ
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af3acd39e4ba7a122ee0148e1e0910eaeba9c398
integ/base/linuxptp/debian/patches/0021-pmc_agent-Simplify-the-update-method.patch
Andre Mauricio Zelak 600ad549b5 Use time traceable flag in HA clock selection 
A new time traceable flag was added to pmc agent to store the current
time traceable status.

This flag replaces the utc_offset_traceable flag in the HA clock
selection algorithm and status command.

Test plan: HA clock selection algorithm
PASS: Verify the clock source which time isn't traceable is discarded
by the algorithm if ha_gm_timeTraceable is enabled.
PASS: Verify the clock source which time is traceable isn't discarded
by the algorithm if ha_gm_timeTraceable is enabled.

Regression: status command
PASS: Verify the response of status command shows the correct GM time
traceable.

The 'valid sources' command is used to get a list of interfaces which
the clock is matching the requirements. The response contains a space
separated list of interfaces, or "None" when not a single clock is
matching all the requirements.

Test plan: valid sources command
PASS: Verify that a space separated list of interface is returned when
one or more clocks match the requirements.
PASS: Verify that the string "None" is returned when not a single clock
match the requirements.

Now the GM time traceable check is enabled by default as it is an
important check for both T-GM and T-BC scenarios.

The GM time traceable check is controlled in configuration by using
the ha_gm_timeTraceable setting, and it can be disabled using the
value 0 (ha_gm_timeTraceable 0).

Test plan: default value
PASS Verify the check is performed by default.
PASS Verify the user can disable the check by configuration.

Bonus:

Fixed the behavior when none clock is matching the requirements and the
active clock source is disabled using the 'disable source <interface>'
command. The interface is must be disabled and a new clock source is
selected.

Test plan: none clock is matching the requirements
PASS: Verify that the active source can be disabled and a new one is
selected.
PASS: Verify that an attempt to disable the last active interface
fails and an appopriated message is given as response.
PASS: Verify that the interface with higher priority is selected after
re-enabling it.
PASS: Verify the active clock source doesn't change if another
interface is disabled.
PASS: Verify the active clock source doesn't change if another
interface is re-enabled.

Story: 2010723
Task: 48702

Change-Id: I64193575a995e520d36460c0ebb8dd452fa8c2b8
Signed-off-by: Andre Mauricio Zelak <andre.zelak@windriver.com>
2023-09-06 15:09:14 -03:00

134 lines
4.1 KiB
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From 82a369b4fe44a7cea41fb0ccf408c02b1b6aa694 Mon Sep 17 00:00:00 2001
From: Andre Mauricio Zelak <andre.zelak@windriver.com>
Date: Mon, 12 Jun 2023 15:17:26 -0300
Subject: [PATCH 21/54] pmc_agent: Simplify the update method.
The main method that causes the PMC agent to update its status takes a flag
that results in different behavior when push notifications are active.
This patch simplifies the interface by letting the agent remember whether
or not the caller subscribed to the notifications in the first place.
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
[commit 1126f8f67e853199f05a7c993c910ebc7807bd3d upstream]
Signed-off-by: Andre Mauricio Zelak <andre.zelak@windriver.com>
---
phc2sys.c | 6 ++++--
pmc_agent.c | 32 ++++++++++++++++++++------------
pmc_agent.h | 2 +-
3 files changed, 25 insertions(+), 15 deletions(-)
diff --git a/phc2sys.c b/phc2sys.c
index f61e699..b155961 100644
--- a/phc2sys.c
+++ b/phc2sys.c
@@ -672,7 +672,7 @@ static int do_pps_loop(struct phc2sys_private *priv, struct clock *clock,
pps_offset = pps_ts - phc_ts;
}
- if (update_pmc_node(priv->node, 0) < 0)
+ if (update_pmc_node(priv->node) < 0)
continue;
update_clock(priv, clock, pps_offset, pps_ts, -1);
}
@@ -710,8 +710,10 @@ static int do_loop(struct phc2sys_private *priv, int subscriptions)
while (is_running()) {
clock_nanosleep(CLOCK_MONOTONIC, 0, &interval, NULL);
- if (update_pmc_node(priv->node, subscriptions) < 0)
+
+ if (update_pmc_node(priv->node) < 0) {
continue;
+ }
if (subscriptions) {
run_pmc_events(priv->node);
diff --git a/pmc_agent.c b/pmc_agent.c
index 9c5eb71..dd509af 100644
--- a/pmc_agent.c
+++ b/pmc_agent.c
@@ -42,6 +42,7 @@ struct pmc_agent {
int clock_identity_set;
int leap;
int pmc_ds_requested;
+ bool stay_subscribed;
int sync_offset;
int utc_offset_traceable;
@@ -188,6 +189,19 @@ static int run_pmc(struct pmc_agent *node, int timeout, int ds_id,
}
}
+static int renew_subscription(struct pmc_agent *node, int timeout)
+{
+ struct ptp_message *msg;
+ int res;
+
+ res = run_pmc(node, timeout, TLV_SUBSCRIBE_EVENTS_NP, &msg);
+ if (is_run_pmc_error(res)) {
+ return run_pmc_err2errno(res);
+ }
+ msg_put(msg);
+ return 0;
+}
+
int run_pmc_wait_sync(struct pmc_agent *node, int timeout)
{
struct ptp_message *msg;
@@ -323,7 +337,7 @@ int run_pmc_clock_identity(struct pmc_agent *node, int timeout)
}
/* Returns: -1 in case of error, 0 otherwise */
-int update_pmc_node(struct pmc_agent *node, int subscribe)
+int update_pmc_node(struct pmc_agent *node)
{
struct timespec tp;
uint64_t ts;
@@ -337,8 +351,9 @@ int update_pmc_node(struct pmc_agent *node, int subscribe)
if (node->pmc &&
!(ts > node->pmc_last_update &&
ts - node->pmc_last_update < PMC_UPDATE_INTERVAL)) {
- if (subscribe)
- pmc_agent_subscribe(node, 0);
+ if (node->stay_subscribed) {
+ renew_subscription(node, 0);
+ }
if (run_pmc_get_utc_offset(node, 0) > 0)
node->pmc_last_update = ts;
}
@@ -393,15 +408,8 @@ void pmc_agent_set_sync_offset(struct pmc_agent *agent, int offset)
int pmc_agent_subscribe(struct pmc_agent *node, int timeout)
{
- struct ptp_message *msg;
- int res;
-
- res = run_pmc(node, timeout, TLV_SUBSCRIBE_EVENTS_NP, &msg);
- if (is_run_pmc_error(res)) {
- return run_pmc_err2errno(res);
- }
- msg_put(msg);
- return 0;
+ node->stay_subscribed = true;
+ return renew_subscription(node, timeout);
}
bool pmc_agent_utc_offset_traceable(struct pmc_agent *agent)
diff --git a/pmc_agent.h b/pmc_agent.h
index 9dc684e..743818f 100644
--- a/pmc_agent.h
+++ b/pmc_agent.h
@@ -33,7 +33,7 @@ typedef int pmc_node_recv_subscribed_t(void *context, struct ptp_message *msg,
int init_pmc_node(struct config *cfg, struct pmc_agent *agent, const char *uds,
pmc_node_recv_subscribed_t *recv_subscribed, void *context);
-int update_pmc_node(struct pmc_agent *agent, int subscribe);
+int update_pmc_node(struct pmc_agent *agent);
int run_pmc_clock_identity(struct pmc_agent *agent, int timeout);
int run_pmc_wait_sync(struct pmc_agent *agent, int timeout);
int run_pmc_get_number_ports(struct pmc_agent *agent, int timeout);
--
2.25.1
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