Support packet trimming

release/models/acl/openconfig-packet-match.yang

@@ -31,7 +31,13 @@ module openconfig-packet-match {
     wildcard ('any') for that field.";
 
 
-  oc-ext:openconfig-version "2.2.0";
+  oc-ext:openconfig-version "2.3.0";
+
+  revision "2026-03-25" {
+    description
+      "Add internal switching fabric parameters";
+    reference "2.3.0";
+  }
 
   revision "2025-06-10" {
     description
@@ -739,4 +745,48 @@ module openconfig-packet-match {
     }
   }
 
+  grouping fabric-params-top {
+    description
+      "Top-level grouping for parameters related to the internal
+       switching fabric of the device.";
+
+    container fabric {
+      description
+        "Enclosing container for managing device-specific fabric
+         attributes.";
+
+      container config {
+        description
+          "Configuration parameters relating to fabric
+          parameters.";
+
+        uses fabric-params-config;
+      }
+
+      container state {
+        description
+          "Operational state parameters relating to fabric
+          parameters.";
+        config false;
+
+        uses fabric-params-config;
+      }
+    }
+  }
+
+  grouping fabric-params-config {
+    description
+      "Top-level grouping for configurable parameters related to the
+      internal switching fabric of the device.";
+    leaf fabric-priority {
+      type uint8;
+      description
+        "Specifies the priority for the forwarding group for local
+         transmission through the device (e.g., across the internal
+         switching fabric). The priority is expressed as a numerical
+         value where higher values indicate higher precedence. For
+         example, traffic with fabric priority 128 is treated with
+         higher priority than traffic with fabric priority 0.";
+    }
+  }
 }

release/models/qos/openconfig-qos-elements.yang

@@ -35,7 +35,13 @@ submodule openconfig-qos-elements {
       packets for transmission, including policer and shaper
       functions";
 
-  oc-ext:openconfig-version "2.0.1";
+  oc-ext:openconfig-version "2.1.0";
+
+  revision "2026-03-25" {
+    description
+      "Add fabric parameters for classifier.";
+    reference "2.1.0";
+  }
 
   revision "2026-01-24" {
     description
@@ -257,6 +263,7 @@ submodule openconfig-qos-elements {
             uses oc-pkt-match:ipv6-protocol-fields-top;
             uses oc-pkt-match:transport-fields-top;
             uses oc-pkt-match:mpls-header-top;
+            uses oc-pkt-match:fabric-params-top;
         }
 
         container actions {

release/models/qos/openconfig-qos-interfaces.yang

@@ -25,7 +25,13 @@ submodule openconfig-qos-interfaces {
     configuration and operational state associated with
     interfaces.";
 
-  oc-ext:openconfig-version "2.0.1";
+  oc-ext:openconfig-version "2.1.0";
+
+  revision "2026-03-25" {
+    description
+      "Bump version to 2.1.0";
+    reference "2.1.0";
+  }
 
   revision "2026-01-24" {
     description

release/models/qos/openconfig-qos-mem-mgmt.yang

@@ -29,7 +29,13 @@ submodule openconfig-qos-mem-mgmt {
       per-queue basis, and determine how packets are marked/dropped within
       the queue instantiation.";
 
-  oc-ext:openconfig-version "2.0.1";
+  oc-ext:openconfig-version "2.1.0";
+
+  revision "2026-03-25" {
+    description
+      "Add packet discard action at queue level.";
+    reference "2.1.0";
+  }
 
   revision "2026-01-24" {
     description
@@ -341,6 +347,19 @@ revision "2023-07-26" {
         calculated as (free buffer * 2^scaling factor) ie. 10MB*2^3 = 80MB. Since the
         current usage is 79MB which is < 80MB, the packet is queued.";
     }
+
+    leaf trim-enable {
+      type boolean;
+
+      description
+        "Flag to enable packet trimming per queue. If leaf is set
+         to false, the packet should be completely discard,
+         effectively silent dropping without preserving any part
+         of the data. If leaf is set to false, packet would be
+         trimmed instead of fully dropped. Typically, this involves
+         truncating the payload while preserving the packet header
+         for notification or diagnostic purposes.";
+    }
   }
 
   grouping qos-queue-management-profile-config {

release/models/qos/openconfig-qos.yang

@@ -27,7 +27,13 @@ module openconfig-qos {
     "This module defines configuration and operational state data
     related to network quality-of-service.";
 
-  oc-ext:openconfig-version "2.0.1";
+  oc-ext:openconfig-version "2.1.0";
+
+  revision "2026-03-25" {
+    description
+      "Add parameters for packet trimming configuration";
+    reference "2.1.0";
+  }
 
   revision "2026-01-24" {
     description
@@ -169,6 +175,52 @@ revision "2023-07-26" {
       "Operational state data for global QoS";
   }
 
+  grouping qos-packet-trim-top {
+    description
+      "Top-level grouping for packet trimming.";
+
+    container packet-trim {
+      description
+        "Container for switch level packet trimming
+        parameters.";
+
+      container config {
+        description
+          "Configuration data for switch level packet
+          trimming parameters.";
+
+        uses packet-trim-config;
+      }
+      container state {
+        description
+          "Operational state data for switch level packet
+          trimming parameters.";
+        config false;
+
+        uses packet-trim-config;
+      }
+    }
+  }
+
+  grouping packet-trim-config {
+    description
+      "Top-level grouping for switch level packet
+      trimming parameters";
+    leaf symmetric-dscp {
+      type uint8;
+      description
+        "The DSCP value for the notification packet
+        (sometimes called a 'symmetric packet') sent back
+        to the source when a packet is trimmed.";
+    }
+    leaf fabric-priority {
+      type uint8;
+      description
+        "Traffic class used to transmit trimmed
+        packets.";
+    }
+  }
+
   grouping qos-top {
     description
       "Top-level grouping for QoS model";
@@ -185,10 +237,10 @@ revision "2023-07-26" {
       }
 
       container state {
-        config false;
         description
           "Operational state data for global QoS";
 
+        config false;
         uses qos-config;
         uses qos-state;
       }
@@ -200,6 +252,7 @@ revision "2023-07-26" {
       uses qos-scheduler-top;
       uses qos-buffer-profile-top;
       uses qos-queue-mgmt-profile-top;
+      uses qos-packet-trim-top;
     }
   }