Merge remote-tracking branch 'up/master'

Author: jafingerhut

exercises/flowcache/README.md

@@ -23,7 +23,9 @@ necessary to forward traffic between hosts.
 
 The starter code for this assignment is in files called `flowcache.p4` and `mycontroller.py`. Your job will be to finalize the P4 program to properly implement the `PacketIn` and `PacketOut` idle timeout mechanismes.
 
-Let's first compile the new P4 program, start the network, and use `mycontroller.py` to install the flowcache pipeline in the data plane.
+First, you need to define the fields in the `packet_in` and `packet_out` headers; otherwise, you’ll get compilation errors. The `packet_in` header should contain three fields: `input_port`, `punt_reason`, and `opcode`. The `packet_out` header should include: `opcode`, `reserved1`, and `operand0` (which represents the egress port in this case). You can see how these header fields are configured and used in the P4 code. More details about `packet_in` and `packet_out` are available in Section 6.4.6 of the [P4Runtime Spec](https://p4.org/specifications/).
+
+After defining the `packet_in` and `packet_out` headers, compile the new P4 program, start the network, and use `mycontroller.py` to install the flowcache pipeline in the data plane.
 
 1. In your shell, run:
    ```bash

vm-ubuntu-24.04/install.sh

@@ -26,13 +26,14 @@ print_usage() {
     1>&2 echo "usage: $0 [ latest | <date> ]"
     1>&2 echo ""
     1>&2 echo "Dates supported:"
+    1>&2 echo "    2025-Oct-01"
     1>&2 echo "    2025-Sep-01"
     1>&2 echo "    2025-Aug-01"
 }
 
 if [ $# -eq 0 ]
 then
-    VERSION="2025-Sep-01"
+    VERSION="2025-Oct-01"
     echo "No version specified.  Defaulting to ${VERSION}"
 elif [ $# -eq 1 ]
 then
@@ -43,6 +44,12 @@ else
 fi
 
 case ${VERSION} in
+    2025-Oct-01)
+	export INSTALL_BEHAVIORAL_MODEL_SOURCE_VERSION="68f4a978f465fd76e98fcdecb762981843fb7310"
+	export INSTALL_PI_SOURCE_VERSION="5689c91a8a7423781267b27d8b166c49a53904ff"
+	export INSTALL_P4C_SOURCE_VERSION="2265f80459e06a89ffba26cb51c42cc05b1c023e"
+	export INSTALL_PTF_SOURCE_VERSION="05f46c3873feb2213df29743be3d9a9e34d5559b"
+	;;
     2025-Sep-01)
 	export INSTALL_BEHAVIORAL_MODEL_SOURCE_VERSION="c8081706b38aa6c7e26e8aa78513ac0ac1c17975"
 	export INSTALL_PI_SOURCE_VERSION="5689c91a8a7423781267b27d8b166c49a53904ff"