[202503][PR:23107] Enable link training support in sonic-mgmt

ansible/library/conn_graph_facts.py

@@ -301,6 +301,7 @@ def csv_to_graph_facts(self):
             vlan_mode = link["VlanMode"]
             autoneg_mode = link.get("AutoNeg")
             fec_disable = link.get("FECDisable", False)
+            linktraining_mode = link.get("LinkTraining", "")
 
             if start_device not in links:
                 links[start_device] = {}
@@ -327,6 +328,9 @@ def csv_to_graph_facts(self):
             if autoneg_mode:
                 links[start_device][start_port].update({"autoneg": autoneg_mode})
                 links[end_device][end_port].update({"autoneg": autoneg_mode})
+            if linktraining_mode:
+                links[start_device][start_port].update({"linktraining": linktraining_mode})
+                links[end_device][end_port].update({"linktraining": linktraining_mode})
 
             port_vlans[start_device][start_port] = {
                 "mode": vlan_mode,

ansible/library/generate_golden_config_db.py

@@ -340,6 +340,23 @@ def generate_lt2_ft2_golden_config_db(self):
 
         return json.dumps(golden_config, indent=4)
 
+    def generate_t0_f2_golden_config_db(self):
+        """
+        Generate golden_config for t0-f2 to enable link_training on server facing ports.
+        """
+        SUPPORTED_TOPO = ["t0-f2-d40u8"]
+        if self.topo_name not in SUPPORTED_TOPO:
+            return "{}"
+        ori_config = json.loads(self.get_config_from_minigraph())
+        golden_config = ori_config
+        golden_config["PORT"] = ori_config.get("PORT", {})
+        for _, config in golden_config["PORT"].items():
+            # Enable link_training for server facing ports
+            if "Server" in config.get("description", ""):
+                config["link_training"] = "on"
+
+        return json.dumps(golden_config, indent=4)
+
     def generate(self):
         module_msg = "Success to generate golden_config_db.json"
         # topo check
@@ -351,6 +368,9 @@ def generate(self):
             config = self.generate_smartswitch_golden_config_db()
             self.module.run_command("sudo rm -f {}".format(TEMP_SMARTSWITCH_CONFIG_PATH))
             module_msg = module_msg + " for smartswitch"
+        elif "t0-f2" in self.topo_name:
+            config = self.generate_t0_f2_golden_config_db()
+            module_msg = module_msg + " for t0-f2"
         elif "ft2" in self.topo_name or "lt2" in self.topo_name:
             config = self.generate_lt2_ft2_golden_config_db()
         elif "t2_single_node" in self.topo_name:

ansible/roles/fanout/templates/sonic_deploy_202405.j2

@@ -19,9 +19,28 @@
     {% if fanout_hwsku == "Arista-720DT-G48S4" and (fanout_port_config[port_name]['lanes'] | int) <= 24 %}
             "autoneg": "on",
     {% endif %}
-    {% if fanout_port_config[port_name]['speed'] | default('100000') in ["100000", "400000", "800000"] %}
+    {% if fanout_port_config[port_name]['speed'] | default('100000') in ["100000", "200000", "400000", "800000"] %}
             "fec" : "rs",
     {% endif %}
+    {% if port_name in device_conn[inventory_hostname] %}
+        {% if 'linktraining' in device_conn[inventory_hostname][port_name] %}
+            {% if 'on' in device_conn[inventory_hostname][port_name]['linktraining'] %}
+                "link_training": "on",
+            {% elif 'off' in device_conn[inventory_hostname][port_name]['linktraining'] %}
+                "link_training": "off",
+            {% endif %}
+        {% endif %}
+        {% if 'autoneg' in device_conn[inventory_hostname][port_name] %}
+                {% if 'on' in device_conn[inventory_hostname][port_name]['autoneg'] %}
+                    "autoneg": "on",
+                    {% if msft_an_enabled is defined %}
+                        "fec": "none",
+                    {% endif %}
+                {% elif 'off' in device_conn[inventory_hostname][port_name]['autoneg'] %}
+                    "autoneg": "off",
+                {% endif %}
+        {% endif %}
+    {% endif %}
     {% if 'broadcom' in fanout_sonic_version["asic_type"] or 'marvell' in fanout_sonic_version["asic_type"] or 'mellanox' in fanout_sonic_version["asic_type"] %}
         {% if port_name in device_port_vlans[inventory_hostname] and device_port_vlans[inventory_hostname][port_name]["mode"].lower() == "access" %}
             "tpid": "0x9100",