tree 621a4308aa07a4443977087f18a3af4d60b1f46b
parent ab78ad435971476f51d0f2e561c6cbe1e8264729
author Robert MacDavid <robertmacdavid@gmail.com> 1590111158 -0400
committer Carmelo Cascone <carmelo@opennetworking.org> 1596139338 +0000

Backport fabric-spgw TNA changes to v1model

Rewrite the SPGW P4 pipeline.

This commit makes two changes to the fabric.p4 source files:
1. Routing is now done on a metadata field instead of the ipv4 header.
Routing on the ipv4 header is incorrect if the packet is encapsulated
with an outer IPV4 header. The metadata field is updated each time the
ipv4 destination changes, or an outer header is added or removed. These
changes require no control plane modifications due to @name annotations.
2. The spgw control blocks have been rewritten to support the logical UP4
pipeline. Its location in the pipeline is unchanged, and its
interactions with other control blocks is unchanged.

These changes compile for both bmv2 and tofino, and There is currently a
PR for the fabric-p4test repo which updates the SPGW PTF tests to
account for these changes.

Change-Id: I80ccf30e136a2bb24a83029e22413af351e6eed6

Allow building fabric.p4 with custom S1U_SGW_PREFIX

Change-Id: I4fcaf3f2b56e6d024e54f8897467c280be73e001

Backport fabric-spgw TNA changes to v1model

This branch ports the SPGW pipeline of fabric-tna back to v1model to
make the tables and actions consistent across the two versions. This
consistency will allow for testing of ONOS apps on both software and
hardware targets, since the only available software target that works
with ONOS requires v1model p4 programs. Changes to the fabric testing
suite (fabric-p4test) will be pushed in parallel.

Change-Id: Iad393b27f08a4fcd29f82e59d181871475ef2b10