starlingx/integ
Code Issues Proposed changes
integ/base/linuxptp/debian/patches/0029-pmc_agent-Generalize-the-method-that-queries-the-loc.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

184 lines
5.6 KiB
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Raw Blame History

From 3e6dd047083625ca03df9b4bbdc781e7dd079ff2 Mon Sep 17 00:00:00 2001
From: Andre Mauricio Zelak <andre.zelak@windriver.com>
Date: Mon, 12 Jun 2023 17:29:30 -0300
Subject: [PATCH 29/54] pmc_agent: Generalize the method that queries the local
clock identity.
When started in automatic mode, the phc2sys program first queries the
local clock identification and then the number of ports immediately
afterwords. However, both of those values come from the default data
set. Make code both simpler and more efficient by caching the entire
data set inside of the agent.
A subsequent patch will fix the run_pmc_get_number_ports() method to
return the cached result.
The active word in the function's name is "query" rather that "get" in
order to distinguish methods that send and receive over the network
from those that merely return a cached value.
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
[commit 919703eb06b7ee9679308597e01e1da0162736d7 upstream]
Signed-off-by: Andre Mauricio Zelak <andre.zelak@windriver.com>
---
phc2sys.c | 20 +++++++++++---------
pmc_agent.c | 46 +++++++++++++++++++++++-----------------------
pmc_agent.h | 15 ++++++++++++++-
3 files changed, 48 insertions(+), 33 deletions(-)
diff --git a/phc2sys.c b/phc2sys.c
index 32e6e13..0f33630 100644
--- a/phc2sys.c
+++ b/phc2sys.c
@@ -854,23 +854,25 @@ static int phc2sys_recv_subscribed(void *context, struct ptp_message *msg,
static int auto_init_ports(struct phc2sys_private *priv, int add_rt)
{
- int err, number_ports, res;
- int state, timestamping;
+ int err, number_ports, state, timestamping;
char iface[IFNAMSIZ];
struct clock *clock;
struct port *port;
unsigned int i;
while (1) {
- if (!is_running())
+ if (!is_running()) {
return -1;
- res = run_pmc_clock_identity(priv->node, 1000);
- if (res < 0)
- return -1;
- if (res > 0)
+ }
+ err = pmc_agent_query_dds(priv->node, 1000);
+ if (!err) {
break;
- /* res == 0, timeout */
- pr_notice("Waiting for ptp4l...");
+ }
+ if (err == -ETIMEDOUT) {
+ pr_notice("Waiting for ptp4l...");
+ } else {
+ return -1;
+ }
}
number_ports = run_pmc_get_number_ports(priv->node, 1000);
diff --git a/pmc_agent.c b/pmc_agent.c
index cc729ab..51023d1 100644
--- a/pmc_agent.c
+++ b/pmc_agent.c
@@ -38,8 +38,8 @@ struct pmc_agent {
struct pmc *pmc;
uint64_t pmc_last_update;
- struct ClockIdentity clock_identity;
- int clock_identity_set;
+ struct defaultDS dds;
+ bool dds_valid;
int leap;
int pmc_ds_requested;
bool stay_subscribed;
@@ -63,10 +63,11 @@ static void send_subscription(struct pmc_agent *node)
static int check_clock_identity(struct pmc_agent *node, struct ptp_message *msg)
{
- if (!node->clock_identity_set)
+ if (!node->dds_valid) {
return 1;
- return cid_eq(&node->clock_identity,
- &msg->header.sourcePortIdentity.clockIdentity);
+ }
+ return cid_eq(&node->dds.clockIdentity,
+ &msg->header.sourcePortIdentity.clockIdentity);
}
static int is_msg_mgt(struct ptp_message *msg)
@@ -251,24 +252,6 @@ void run_pmc_events(struct pmc_agent *node)
run_pmc(node, 0, -1, &msg);
}
-int run_pmc_clock_identity(struct pmc_agent *node, int timeout)
-{
- struct ptp_message *msg;
- struct defaultDS *dds;
- int res;
-
- res = run_pmc(node, timeout, TLV_DEFAULT_DATA_SET, &msg);
- if (res <= 0)
- return res;
-
- dds = (struct defaultDS *) management_tlv_data(msg);
- memcpy(&node->clock_identity, &dds->clockIdentity,
- sizeof(struct ClockIdentity));
- node->clock_identity_set = 1;
- msg_put(msg);
- return 1;
-}
-
int init_pmc_node(struct config *cfg, struct pmc_agent *node, const char *uds,
pmc_node_recv_subscribed_t *recv_subscribed, void *context)
{
@@ -317,6 +300,23 @@ int pmc_agent_get_sync_offset(struct pmc_agent *agent)
return agent->sync_offset;
}
+int pmc_agent_query_dds(struct pmc_agent *node, int timeout)
+{
+ struct ptp_message *msg;
+ struct defaultDS *dds;
+ int res;
+
+ res = run_pmc(node, timeout, TLV_DEFAULT_DATA_SET, &msg);
+ if (is_run_pmc_error(res)) {
+ return run_pmc_err2errno(res);
+ }
+ dds = (struct defaultDS *) management_tlv_data(msg);
+ memcpy(&node->dds, dds, sizeof(node->dds));
+ node->dds_valid = true;
+ msg_put(msg);
+ return 0;
+}
+
int pmc_agent_query_port_properties(struct pmc_agent *node, int timeout,
unsigned int port, int *state,
int *tstamping, char *iface)
diff --git a/pmc_agent.h b/pmc_agent.h
index ea37bf9..9d8bd1c 100644
--- a/pmc_agent.h
+++ b/pmc_agent.h
@@ -33,7 +33,6 @@ 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 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);
void run_pmc_events(struct pmc_agent *agent);
@@ -70,6 +69,20 @@ int pmc_agent_get_leap(struct pmc_agent *agent);
*/
int pmc_agent_get_sync_offset(struct pmc_agent *agent);
+/**
+ * Queries the local clock's default data set from the ptp4l service.
+ * The result of the query will be cached inside of the agent.
+ *
+ * In addition:
+ *
+ * - The port state notification callback might be invoked.
+ *
+ * @param agent Pointer to a PMC instance obtained via @ref pmc_agent_create().
+ * @param timeout Transmit and receive timeout in milliseconds.
+ * @return Zero on success, negative error code otherwise.
+ */
+int pmc_agent_query_dds(struct pmc_agent *agent, int timeout);
+
/**
* Queries the port properties of a given port from the ptp4l service.
*
--
2.25.1
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