ci: Check compilation with DPDK experimental API.

Add jobs to check compilation with DPDK experimental API enabled.
This will help us catch issues for the day we need one of them.

Note: this should not be merged to master, intended for dpdk-latest
branch only.

Signed-off-by: David Marchand <david.marchand@redhat.com>
Signed-off-by: Ian Stokes <ian.stokes@intel.com>
Signed-off-by: Ilya Maximets <i.maximets@ovn.org>

Author: david-marchand

.ci/linux-build.sh

@@ -8,6 +8,9 @@ SPARSE_FLAGS=""
 EXTRA_OPTS="--enable-Werror"
 JOBS=${JOBS:-"-j4"}
 
+[ -z "$DPDK_EXPERIMENTAL" ] || DPDK=1
+[ -z "$DPDK_SHARED" ] || DPDK=1
+
 function install_dpdk()
 {
     local DPDK_INSTALL_DIR="$(pwd)/dpdk-dir"
@@ -108,8 +111,11 @@ assert ovs.json.from_string('{\"a\": 42}') == {'a': 42}"
     exit 0
 fi
 
-if [ "$DPDK" ] || [ "$DPDK_SHARED" ]; then
+if [ "$DPDK" ]; then
     install_dpdk
+    if [ -n "$DPDK_EXPERIMENTAL" ]; then
+        CFLAGS_FOR_OVS="${CFLAGS_FOR_OVS} -DALLOW_EXPERIMENTAL_API"
+    fi
 fi
 
 if [ "$STD" ]; then

.github/workflows/build-and-test.yml

@@ -141,6 +141,7 @@ jobs:
       CC:          ${{ matrix.compiler }}
       DPDK:        ${{ matrix.dpdk }}
       DPDK_SHARED: ${{ matrix.dpdk_shared }}
+      DPDK_EXPERIMENTAL: ${{ matrix.dpdk_experimental }}
       LIBS:        ${{ matrix.libs }}
       M32:         ${{ matrix.m32 }}
       OPTS:        ${{ matrix.opts }}
@@ -218,6 +219,9 @@ jobs:
             dpdk_shared:  dpdk-shared
             opts:         --enable-shared
 
+          - compiler:     gcc
+            dpdk_experimental: dpdk-experimental
+
           - compiler:     gcc
             m32:          m32
             opts:         --disable-ssl
@@ -294,7 +298,7 @@ jobs:
         diff -u ./hosts.bak /etc/hosts || true
 
     - name: DPDK cache
-      if:   matrix.dpdk != '' || matrix.dpdk_shared != ''
+      if:   matrix.dpdk != '' || matrix.dpdk_shared != '' || matrix.dpdk_experimental != ''
       uses: actions/cache@v4
       with:
         path: dpdk-dir