[cli-sessions] Update YAML models with new serial-console tree, extended ssh-server tree.

Author: i-davydenko

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

@@ -2618,20 +2618,41 @@ There are 4 classes
 }
 ```
 
+### SERIAL_CONSOLE
+
+In this table collected configuration of the next serial-console attributes:
+-   inactivity_timeout - Inactivity timeout for serial-console session, allowed values: 0-35000 (minutes), default value: 15
+-   sysrq_capabilities - Enabling or disabling SysRq functionality for serial-console session, allowed values: enabled/disabled, default value disabled
+
+```
+{
+    SERIAL_CONSOLE:{
+        "POLICIES":{
+            "inactivity_timeout": 15
+            "sysrq_capabilities": "disabled"
+        }
+    }
+}
+```
+
 ### SSH_SERVER
 
-In this table, we allow configuring ssh server global settings. This will feature includes 3 configurations:
+In this table, we allow configuring ssh server global settings. This will feature includes 5 configurations:
 
 -   authentication_retries - number of login attepmts 1-100
 -   login_timeout - Timeout in seconds for login session for user to connect 1-600
 -   ports - Ssh port numbers - string of port numbers seperated by ','
+-   inactivity_timeout - Inactivity timeout for SSH session, allowed values: 0-35000 (min), default value: 15 (min)
+-   max_sessions - Max number of concurrent logins, allowed values: 0-100 (where 0 means no limit), default value: 0
 ```
 {
     "SSH_SERVER": {
         "POLICIES":{
             "authentication_retries": "6",
             "login_timeout": "120",
-            "ports": "22"
+            "ports": "22",
+            "inactivity_timeout": "15",
+            "max_sessions": "0"
         }
     }
 }

src/sonic-yang-models/setup.py

@@ -201,6 +201,7 @@ def run(self):
                          './yang-models/sonic-macsec.yang',
                          './yang-models/sonic-bgp-sentinel.yang',
                          './yang-models/sonic-bmp.yang',
+                         './yang-models/sonic-serial-console.yang',
                          './yang-models/sonic-smart-switch.yang',]),
         ('cvlyang-models', ['./cvlyang-models/sonic-acl.yang',
                          './cvlyang-models/sonic-banner.yang',
@@ -243,6 +244,7 @@ def run(self):
                          './cvlyang-models/sonic-nat.yang',
                          './cvlyang-models/sonic-nvgre-tunnel.yang',
                          './cvlyang-models/sonic-pbh.yang',
+                         './cvlyang-models/sonic-ssh-server.yang',
                          './cvlyang-models/sonic-policer.yang',
                          './cvlyang-models/sonic-port.yang',
                          './cvlyang-models/sonic-portchannel.yang',
@@ -278,6 +280,7 @@ def run(self):
                          './cvlyang-models/sonic-system-port.yang',
                          './cvlyang-models/sonic-macsec.yang',
                          './cvlyang-models/sonic-bmp.yang',
+                         './cvlyang-models/sonic-serial-console.yang',
                          './cvlyang-models/sonic-bgp-sentinel.yang']),
     ],
     zip_safe=False,

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

@@ -2410,7 +2410,16 @@
             "POLICIES":{
                 "authentication_retries": "6",
                 "login_timeout": "120",
-                "ports": "22"
+                "ports": "22",
+                "inactivity_timeout": "15",
+                "max_sessions": "0"
+            }
+        },
+
+        "SERIAL_CONSOLE": {
+            "POLICIES":{
+                "inactivity_timeout": "15",
+                "sysrq_capabilities": "disabled"
             }
         },
 

src/sonic-yang-models/yang-models/sonic-serial-console.yang

@@ -0,0 +1,37 @@
+//filename:  sonic-serial-console.yang
+module sonic-serial-console {
+    yang-version 1.1;
+    namespace "http://github.com/Azure/sonic-serial-console";
+    prefix cli-sessions;
+    description "SERIAL_CONSOLE YANG Module for SONiC-based OS";
+    revision 2023-06-07 {
+        description "First Revision";
+    }
+    container sonic-serial-console {
+        container SERIAL_CONSOLE {
+            description "SERIAL_CONSOLE part of config_db.json";
+            container POLICIES {
+	            leaf inactivity_timeout {
+	                description "serial-console inactivity-timeout timer value in minutes";
+	                type int32 {
+	                    range "0..35000";
+	                }
+	                default 15;
+	            }
+	
+	            leaf sysrq_capabilities {
+	                description "managing SysRq capabilities";
+	                type enumeration {
+	                    enum disabled;
+	                    enum enabled;
+	                }
+	                default disabled;
+	            }
+		}
+		/* end of container POLICIES */
+        }
+        /* end of container SERIAL_CONSOLE */
+    }
+    /* end of top level container */
+}
+/* end of module sonic-serial-console */

src/sonic-yang-models/yang-models/sonic-ssh-server.yang

@@ -11,6 +11,11 @@ module sonic-ssh-server {
         description
             "First Revision";
     }
+    
+    revision 2023-06-07 {
+        description
+            "Introduce inactivity timeout and max syslogins options";
+    }
 
     container sonic-ssh-server {
         container SSH_SERVER {
@@ -40,6 +45,20 @@ module sonic-ssh-server {
                         }
                     }
                 }
+                leaf inactivity_timeout {
+                    description "inactivity timeout (in minutes), 0 means no timeout";
+                    default 15;
+                    type uint32 {
+                        range 0..35000;
+                    }
+                }
+                leaf max_sessions {
+                    description "limit of concurrent system logins, 0 means no limit";
+                    default 0;
+                    type uint32 {
+                        range 0..100;
+                    }
+                }
             }/*container policies */
         } /* container SSH_SERVER  */
     }/* container sonic-ssh-server */