Allow buffer profile apply after init (sonic-net#1099)

* Allow buffer profile application after init (i.e., at run time)

Signed-off-by: Wenda Ni <wenni@microsoft.com>

* Address comment: Alert when a buffer profile is applied after the
physical port is brought up

Signed-off-by: Wenda Ni <wenni@microsoft.com>

* Remove unnecessary space

Signed-off-by: Wenda Ni <wenni@microsoft.com>

* Correct logic

Signed-off-by: Wenda Ni <wenni@microsoft.com>

* Correct compile error

Signed-off-by: Wenda Ni <wenni@microsoft.com>

orchagent/bufferorch.cpp

@@ -579,7 +579,19 @@ task_process_status BufferOrch::processQueue(Consumer &consumer)
     }
     else
     {
-        SWSS_LOG_ERROR("Queue profile '%s' was inserted after BufferOrch init", key.c_str());
+        // If a buffer queue profile is not in the initial CONFIG_DB BUFFER_QUEUE table
+        // at BufferOrch object instantiation, it is considered being applied
+        // at run time, and, in this case, is not tracked in the m_ready_list. It is up to
+        // the application to guarantee the set order that the buffer queue profile
+        // should be applied to a physical port before the physical port is brought up to
+        // carry traffic. Here, we alert to application through syslog when such a wrong
+        // set order is detected.
+        for (const auto &port_name : port_names)
+        {
+            if (gPortsOrch->isPortAdminUp(port_name)) {
+                SWSS_LOG_ERROR("Queue profile '%s' applied after port %s is up", key.c_str(), port_name.c_str());
+            }
+        }
     }
 
     return task_process_status::task_success;
@@ -666,7 +678,19 @@ task_process_status BufferOrch::processPriorityGroup(Consumer &consumer)
     }
     else
     {
-        SWSS_LOG_ERROR("PG profile '%s' was inserted after BufferOrch init", key.c_str());
+        // If a buffer pg profile is not in the initial CONFIG_DB BUFFER_PG table
+        // at BufferOrch object instantiation, it is considered being applied
+        // at run time, and, in this case, is not tracked in the m_ready_list. It is up to
+        // the application to guarantee the set order that the buffer pg profile
+        // should be applied to a physical port before the physical port is brought up to
+        // carry traffic. Here, we alert to application through syslog when such a wrong
+        // set order is detected.
+        for (const auto &port_name : port_names)
+        {
+            if (gPortsOrch->isPortAdminUp(port_name)) {
+                SWSS_LOG_ERROR("PG profile '%s' applied after port %s is up", key.c_str(), port_name.c_str());
+            }
+        }
     }
 
     return task_process_status::task_success;

orchagent/portsorch.cpp

@@ -400,6 +400,17 @@ bool PortsOrch::isInitDone()
     return m_initDone;
 }
 
+bool PortsOrch::isPortAdminUp(const string &alias)
+{
+    auto it = m_portList.find(alias);
+    if (it == m_portList.end())
+    {
+        SWSS_LOG_ERROR("Failed to get Port object by port alias: %s", alias.c_str());
+        return false;
+    }
+
+    return it->second.m_admin_state_up;
+}
 
 map<string, Port>& PortsOrch::getAllPorts()
 {

orchagent/portsorch.h

@@ -57,6 +57,7 @@ class PortsOrch : public Orch, public Subject
 
     bool allPortsReady();
     bool isInitDone();
+    bool isPortAdminUp(const string &alias);
 
     map<string, Port>& getAllPorts();
     bool bake() override;

portsyncd/portsyncd.cpp

@@ -166,7 +166,6 @@ int main(int argc, char **argv)
         return EXIT_FAILURE;
     }
 
-
     return 1;
 }