[yang] add Yang model for MUX_LINKMGR|LINK_PROBER (#15384)

Add yang model for MUX_LINKMGR|LINK_PROBER table.

sign-off: zhangjing@microsoft.com

src/sonic-yang-models/doc/Configuration.md

@@ -47,6 +47,7 @@ Table of Contents
          * [Management VRF](#management-vrf)
          * [MAP_PFC_PRIORITY_TO_QUEUE](#map_pfc_priority_to_queue)
          * [MUX_CABLE](#mux_cable)
+         * [MUX_LINKMGR](#mux_linkmgr)
          * [NEIGH](#neigh)
          * [NTP Global Configuration](#ntp-global-configuration)
          * [NTP and SYSLOG servers](#ntp-and-syslog-servers)
@@ -1403,6 +1404,25 @@ The **MUX_CABLE** table is used for dualtor interface configuration. The `cable_
 }
 ```
 
+### MUX_LINKMGR
+The **MUX_LINKMGR** table is used for dualtor device configuration.
+```
+{
+    "MUX_LINKMGR": {
+        "LINK_PROBER": {
+            "interval_v4": "100",
+            "interval_v6": "1000",
+            "positive_signal_count": "1",
+            "negative_signal_count": "3",
+            "suspend_timer": "500",
+            "use_well_known_mac": "enabled",
+            "src_mac": "ToRMac",
+            "interval_pck_loss_count_update": "3"
+        }
+    }
+}
+```
+
 ### NEIGH
 
 The **NEIGH** table is used to keep track of resolved and static neighbors.

src/sonic-yang-models/setup.py

@@ -133,6 +133,7 @@ setup(
                          './yang-models/sonic-mirror-session.yang',
                          './yang-models/sonic-mpls-tc-map.yang',
                          './yang-models/sonic-mux-cable.yang',
+                         './yang-models/sonic-mux-linkmgr.yang',
                          './yang-models/sonic-neigh.yang',
                          './yang-models/sonic-ntp.yang',
                          './yang-models/sonic-nat.yang',

src/sonic-yang-models/tests/files/sample_config_db.json

@@ -2120,6 +2120,19 @@
             }
         },
 
+        "MUX_LINKMGR": {
+            "LINK_PROBER": {
+                "interval_v4": "100",
+                "interval_v6": "1000",
+                "positive_signal_count": "1",
+                "negative_signal_count": "3",
+                "suspend_timer": "500",
+                "use_well_known_mac": "enabled",
+                "src_mac": "ToRMac",
+                "interval_pck_loss_count_update": "3"
+            }
+        },
+
         "NEIGH": {
             "Vlan100|100.1.1.3": {
                 "family": "IPv4"

src/sonic-yang-models/tests/yang_model_tests/tests/mux-linkmgr.json

@@ -0,0 +1,8 @@
+{
+    "MUX_LINKMGR_LINK_PROBER_INTERVAL_CHANGE": {
+        "desc": "Consume ICMP heartbeat interval and timeout config changes. "
+    },
+    "MUX_LINKMGR_LINK_PROBER_CHANGE_MAC_ADDR": {
+        "desc": "Use well-known mac and vlan mac as dst/src in linkmgrd link prober. "
+    }
+}

src/sonic-yang-models/tests/yang_model_tests/tests_config/mux-linkmgr.json

@@ -0,0 +1,26 @@
+{
+    "MUX_LINKMGR_LINK_PROBER_INTERVAL_CHANGE": {
+        "sonic-mux-linkmgr:sonic-mux-linkmgr": {
+            "sonic-mux-linkmgr:MUX_LINKMGR": {
+                "sonic-mux-linkmgr:LINK_PROBER": 
+                    {
+                        "interval_v4": "1000",
+                        "interval_v6": "10000",
+                        "positive_signal_count": 3,
+                        "negative_signal_count": 9
+                    }
+            }
+        }
+    },
+    "MUX_LINKMGR_LINK_PROBER_CHANGE_MAC_ADDR": {
+        "sonic-mux-linkmgr:sonic-mux-linkmgr": {
+            "sonic-mux-linkmgr:MUX_LINKMGR": {
+                "sonic-mux-linkmgr:LINK_PROBER": 
+                    {
+                        "use_well_known_mac": "enabled",
+                        "src_mac": "VlanMac"
+                    }
+            }
+        }
+    }
+}

src/sonic-yang-models/yang-models/sonic-mux-linkmgr.yang

@@ -0,0 +1,88 @@
+module sonic-mux-linkmgr {
+    namespace "http://github.com/sonic-net/sonic-mux-linkmgr";
+    prefix mux_linkmgr;
+    yang-version 1.1;
+
+    organization
+        "SONiC";
+
+    contact
+        "SONiC";
+
+    description
+        "SONiC DualToR Linkmgrd configuration data";
+
+    revision 2023-06-07 {
+        description
+            "Initial revision";
+    }
+
+    container sonic-mux-linkmgr {
+
+        container MUX_LINKMGR {
+
+            container LINK_PROBER {
+
+                leaf interval_v4 {
+                    type uint32;
+                    default 100;
+                    units milliseconds;
+
+                    description "IPv4 ICMP heartbeat interval. ";
+                }
+
+                leaf interval_v6 {
+                    type uint32;
+                    default 1000;
+                    units milliseconds;
+
+                    description "IPv6 ICMP heartbeat interval. ";
+                }
+
+                leaf positive_signal_count {
+                    type uint32;
+                    default 1;
+
+                    description "Linkmgrd positive signal count. ";
+                }
+
+                leaf negative_signal_count {
+                    type uint32;
+                    default 3;
+
+                    description "Linkmgrd negative signal count. ";
+                }
+
+                leaf suspend_timer {
+                    type uint32;
+
+                    description "ICMP heartbeat suspending timer, currently not in use. ";
+                }
+
+                leaf use_well_known_mac {
+                    type enumeration {
+                        enum enabled;
+                        enum disabled;
+                    }
+
+                    description "ICMP heartbeat use well known mac as dst mac or not. ";
+                }
+
+                leaf src_mac {
+                    type enumeration {
+                        enum ToRMac;
+                        enum VlanMac;
+                    }
+
+                    description "ICMP heartbeat use what mac as src mac. ";
+                }
+
+                leaf interval_pck_loss_count_update {
+                    type uint32;
+                    
+                    description "The frequency of streaming ICMP heartbeat loss data to telemetry. ";
+                }
+            }
+        }
+    }
+}