Support for ISIS MPLS Segment Routing

device/isis/adjacencysegmentid.yaml

@@ -0,0 +1,92 @@
+components:
+  schemas:
+    IsisInterface.AdjacencySID:
+      description: |-
+        Optional container for segment routing MPLS settings.
+        If the container exists then the adjacency SID (segment identifier)
+        sub TLV will be part of the packet.
+        Reference: https://datatracker.ietf.org/doc/html/rfc8667#name-adjacency-segment-identifie.
+      type: object
+      properties:
+        choice:
+          description: |-
+            The choice of Adjacency-SID carries a value instead of an index.
+            Refer to "srlg_values" under Isis.Interface for SR Local Block (SRLB) and 
+            IsisSR.Srgb under Isis.SRCapability for Segment Routing Global Block (SRGB) Descriptor.
+            - sid_value: Adjacency-SID carries a value.
+            - sid_index: Adjacency-SID carries an index.
+          type: string
+          default: sid_value
+          x-field-uid: 1
+          x-enum:
+            sid_value:
+              x-field-uid: 1
+            sid_index:
+              x-field-uid: 2
+        sid_value:
+          description: |-
+            The corresponding Adjacency SID for a link.
+          type: integer
+          format: uint32
+          default: 0
+          minimum: 1
+          maximum: 1048575
+          x-field-uid: 2
+        sid_index:
+          description: |-
+            The corresponding Adjacency SID for a link.
+          type: integer
+          format: uint32
+          default: 0
+          minimum: 1
+          maximum: 1048575
+          x-field-uid: 3
+        f_flag:
+          description: |-
+            The address family flag. If unset, then the Adj-SID refers
+            to an adjacency with outgoing IPv4 encapsulation.  If set then
+            the Adj-SID refers to an adjacency with outgoing IPv6
+            encapsulation.
+          type: boolean
+          default: false
+          x-field-uid: 4
+        b_flag: 
+          description: |-
+            The backup flag. If set, the Adj-SID is eligible for protection.
+          type: boolean
+          default: false
+          x-field-uid: 5
+        l_flag:
+          description: |-
+            The local flag.  If set, then the value/index carried by
+            the Adj-SID has local significance. In this case, Adjacency_sid is from "srlg_values" under Isis.Interface.
+          type: boolean
+          default: true
+          x-field-uid: 6
+        s_flag:
+          description: |-
+            The set flag. When set, the S-Flag indicates that the
+            Adj-SID refers to a set of adjacencies (and therefore MAY be
+            assigned to other adjacencies as well).
+          type: boolean
+          default: false
+          x-field-uid: 7
+        p_flag:
+          description: |-
+            The persistent flag. When set, the P-Flag indicates that
+            the Adj-SID is persistently allocated, i.e., the Adj-SID value
+            remains consistent across router restart and/or interface flap.
+          type: boolean
+          default: false
+          x-field-uid: 8
+        weight:
+          description: |-
+            The value represents the weight of the Adj-SID for the purpose of load balancing. 
+          type: integer
+          format: uint32
+          default: 0
+          minimum: 0
+          maximum: 255
+          x-field-uid: 9
+
+

device/isis/interface.yaml

@@ -101,7 +101,15 @@ components:
           x-field-uid: 12
         name:
           x-include: ../common/common.yaml#/components/schemas/Named.Object/properties/name
-          x-field-uid: 13        
+          x-field-uid: 13
+        segment_routings:
+          description: >-
+            List of Adjacency Segment Identifier (Adj-SID) sub-TLVs.
+          type: array
+          items:
+            $ref: './adjacencysegmentid.yaml#/components/schemas/IsisInterface.AdjacencySID'
+          x-field-uid: 14
+
     IsisInterface.Level:
       description: >-
         Configuration for the properties of Level 1 Hello.

device/isis/isis.yaml

@@ -57,3 +57,10 @@ components:
         name:
           x-include: ../common/common.yaml#/components/schemas/Named.Object/properties/name
           x-field-uid: 9
+        segment_routing:
+          description: >-
+            Segment Routing (SR).
+          $ref: './segmentrouting.yaml#/components/schemas/Isis.SegmentRouting'
+          x-field-uid: 10
+
+

device/isis/prefixsegmentid.yaml

@@ -0,0 +1,92 @@
+components:
+  schemas:
+    IsisSR.PrefixSID:
+      description: >-
+        This contains the properties of IS-IS Prefix-SID and its attributes for 
+        the extended Ipv4 and Ipv6 reachability.
+        Refernce: https://datatracker.ietf.org/doc/html/rfc8667#name-prefix-segment-identifier-p.
+      type: object
+      properties:
+        choice:
+          description: |-
+            The choice of Prefix-SID carries a value instead of an index.
+            Refer to "srgb_ranges" under IsisSR.Srlb under Isis.RouterCapability  or the SR Local Block (SRLB) 
+            and IsisSR.Srgb under Isis.SRCapability for the Segment Routing Global Block (SRGB) Descriptor.
+            - sid_value: Prefix-SID carries a value
+            - sid_index: Prefix-SID carries an index.
+          type: string
+          default: sid_value
+          x-field-uid: 1
+          x-enum:
+            sid_value:
+              x-field-uid: 1
+            sid_index:
+              x-field-uid: 2
+        sid_value:
+          description: >-
+            SID/Label value that is associated 
+            with the IGP Prefix segment attached to the specific IPv4 or IPv6 prefix.
+          type: integer
+          format: uint32
+          default: 16000   
+          x-field-uid: 2
+        sid_index:
+          description: >-
+            SID/Label Index that is associated 
+            with the IGP Prefix segment attached to the specific IPv4 or IPv6 prefix.
+          type: integer
+          format: uint32
+          default: 0
+          x-field-uid: 3
+        r_flag:
+          description: |-
+            R-Flag: Re-advertisement Flag. 
+            If set, then the prefix to which this Prefix-SID is attached has been propagated by the router 
+            from either another level (i.e., from Level-1 to Level-2 or the opposite) or redistribution (e.g., from another protocol).
+          type: boolean
+          default: false
+          x-field-uid: 4
+        n_flag: 
+          description: |-
+            N-Flag: Node-SID flag.  
+            If set, then the Prefix-SID refers to the router identified by the prefix. 
+            Typically, the N-Flag is set on Prefix-SIDs that are attached to a router loopback address. 
+            The N-Flag is set when the Prefix-SID is a Node-SID as described in [RFC8402].
+          type: boolean
+          default: false
+          x-field-uid: 5
+        p_flag: 
+          description: |-
+            P-Flag: No-PHP (No Penultimate Hop-Popping) Flag.
+            If set, then the Prefix-SID refers to the router identified by the prefix. 
+            Typically, the N-Flag is set on Prefix-SIDs that are attached to a router loopback address. 
+            The N-Flag is set when the Prefix-SID is a Node-SID as described in [RFC8402].
+          type: boolean
+          default: false
+          x-field-uid: 6
+        e_flag: 
+          description: |-
+            E-Flag: Explicit-Null Flag.
+            If set, any upstream neighbor of the Prefix-SID originator MUST replace the Prefix-SID with a Prefix-SID 
+            that has an Explicit NULL value (0 for IPv4 and 2 for IPv6) before forwarding the packet.
+          type: boolean
+          default: false
+          x-field-uid: 7
+        l_flag:
+          description: |-
+            The local flag.  If set, then the value/index carried by
+            the Prefix-SID has local significance and the Prefix SID is from "srgb_ranges" under IsisSR.Srlb under Isis.RouterCapability.
+          type: boolean
+          default: false
+          x-field-uid: 8
+        algorithm:
+          description: |-
+            The Isis may use various algorithms when calculating
+            reachability to other nodes or to prefixes attached to these
+            nodes. 
+          type: integer
+          format: uint32
+          default: 0
+          minimum: 0
+          maximum: 255
+          x-field-uid: 9