[CI run] selftests/bpf: Rewrite daddr

.github/actions/vmtest/action.yml

@@ -0,0 +1,39 @@
+name: 'vmtest'
+description: 'Build + run vmtest'
+inputs:
+  arch:
+    description: 'what arch to test'
+    required: true
+    default: 'x86_64'
+  toolchain:
+    description: 'what toolchain to use'
+    required: true
+    default: 'gcc'
+runs:
+  using: "composite"
+  steps:
+    # 1. Setup environment
+    - name: Setup build environment
+      uses: libbpf/ci/setup-build-env@master
+    # 2. Build
+    - name: Build kernel image
+      shell: bash
+      run: ${GITHUB_ACTION_PATH}/build.sh ${{ inputs.arch }} ${{ inputs.toolchain }}
+    - name: Build selftests
+      shell: bash
+      run: ${GITHUB_ACTION_PATH}/build_selftests.sh ${{ inputs.toolchain }}
+      env:
+        VMLINUX_BTF: ${{ github.workspace }}/vmlinux
+    # 3. Test
+    - name: Prepare rootfs
+      uses: libbpf/ci/prepare-rootfs@master
+      with:
+        project-name: 'libbpf'
+        arch: ${{ inputs.arch }}
+        kernel-root: '.'
+    - name: Run selftests
+      uses: libbpf/ci/run-qemu@master
+      with:
+        arch: ${{ inputs.arch}}
+        img: '/tmp/root.img'
+        vmlinuz: '${{ github.workspace }}/vmlinuz'

.github/actions/vmtest/build.sh

@@ -0,0 +1,24 @@
+#!/bin/bash
+
+set -euo pipefail
+
+ARCH="$1"
+TOOLCHAIN="$2"
+TOOLCHAIN_NAME="$(echo $TOOLCHAIN | cut -d '-' -f 1)"
+TOOLCHAIN_VERSION="$(echo $TOOLCHAIN | cut -d '-' -f 2)"
+
+if [ "$TOOLCHAIN_NAME" == "llvm" ]; then
+export LLVM="-$TOOLCHAIN_VERSION"
+fi
+
+THISDIR="$(cd $(dirname $0) && pwd)"
+
+source "${THISDIR}"/helpers.sh
+
+foldable start build_kernel "Building kernel with $TOOLCHAIN"
+
+cp ${GITHUB_WORKSPACE}/travis-ci/vmtest/configs/config-latest.${ARCH} .config
+
+make -j $((4*$(nproc))) olddefconfig all > /dev/null
+
+foldable end build_kernel

.github/actions/vmtest/build_selftests.sh

@@ -0,0 +1,52 @@
+#!/bin/bash
+
+set -euo pipefail
+
+THISDIR="$(cd $(dirname $0) && pwd)"
+
+source "${THISDIR}"/helpers.sh
+
+TOOLCHAIN="$1"
+TOOLCHAIN_NAME="$(echo $TOOLCHAIN | cut -d '-' -f 1)"
+TOOLCHAIN_VERSION="$(echo $TOOLCHAIN | cut -d '-' -f 2)"
+
+if [ "$TOOLCHAIN_NAME" == "llvm" ]; then
+export LLVM="-$TOOLCHAIN_VERSION"
+LLVM_VER=$TOOLCHAIN_VERSION
+else
+LLVM_VER=15
+fi
+
+foldable start prepare_selftests "Building selftests with $TOOLCHAIN"
+
+LIBBPF_PATH="${REPO_ROOT}"
+
+PREPARE_SELFTESTS_SCRIPT=${THISDIR}/prepare_selftests-${KERNEL}.sh
+if [ -f "${PREPARE_SELFTESTS_SCRIPT}" ]; then
+	(cd "${REPO_ROOT}/${REPO_PATH}/tools/testing/selftests/bpf" && ${PREPARE_SELFTESTS_SCRIPT})
+fi
+
+if [[ "${KERNEL}" = 'LATEST' ]]; then
+	VMLINUX_H=
+else
+	VMLINUX_H=${THISDIR}/vmlinux.h
+fi
+
+cd ${REPO_ROOT}/${REPO_PATH}
+make \
+	CLANG=clang-${LLVM_VER} \
+	LLC=llc-${LLVM_VER} \
+	LLVM_STRIP=llvm-strip-${LLVM_VER} \
+	VMLINUX_BTF="${VMLINUX_BTF}" \
+	VMLINUX_H="${VMLINUX_H}" \
+	-C "${REPO_ROOT}/${REPO_PATH}/tools/testing/selftests/bpf" \
+	-j $((4*$(nproc))) > /dev/null
+cd -
+mkdir "${LIBBPF_PATH}"/selftests
+cp -R "${REPO_ROOT}/${REPO_PATH}/tools/testing/selftests/bpf" \
+	"${LIBBPF_PATH}"/selftests
+cd "${LIBBPF_PATH}"
+rm selftests/bpf/.gitignore
+git add selftests
+
+foldable end prepare_selftests

.github/actions/vmtest/helpers.sh

@@ -0,0 +1,44 @@
+# $1 - start or end
+# $2 - fold identifier, no spaces
+# $3 - fold section description
+foldable() {
+  local YELLOW='\033[1;33m'
+  local NOCOLOR='\033[0m'
+  if [ -z ${GITHUB_WORKFLOW+x} ]; then
+    echo travis_fold:$1:$2
+    if [ ! -z "${3:-}" ]; then
+      echo -e "${YELLOW}$3${NOCOLOR}"
+    fi
+    echo
+  else
+    if [ $1 = "start" ]; then
+      line="::group::$2"
+      if [ ! -z "${3:-}" ]; then
+        line="$line - ${YELLOW}$3${NOCOLOR}"
+      fi
+    else
+      line="::endgroup::"
+    fi
+    echo -e "$line"
+  fi
+}
+
+__print() {
+  local TITLE=""
+  if [[ -n $2 ]]; then
+      TITLE=" title=$2"
+  fi
+  echo "::$1${TITLE}::$3"
+}
+
+# $1 - title
+# $2 - message
+print_error() {
+  __print error $1 $2
+}
+
+# $1 - title
+# $2 - message
+print_notice() {
+  __print notice $1 $2
+}

.github/workflows/test.yml

@@ -0,0 +1,57 @@
+name: bpf-ci
+
+on:
+  pull_request:
+
+concurrency: 
+  group: ci-test-${{ github.head_ref }}
+  cancel-in-progress: true
+
+jobs:
+  VM_Test:
+    runs-on: ${{ matrix.runs_on }}
+    name: Kernel ${{ matrix.kernel }} on ${{ matrix.runs_on }} with ${{ matrix.toolchain }}
+    timeout-minutes: 100
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - kernel: 'LATEST'
+            runs_on: ubuntu-latest
+            arch: 'x86_64'
+            toolchain: 'gcc'
+          - kernel: 'LATEST'
+            runs_on: ubuntu-latest
+            arch: 'x86_64'
+            toolchain: 'llvm-15'
+          - kernel: 'LATEST'
+            runs_on: z15
+            arch: 's390x'
+            toolchain: 'gcc'
+    env:
+      AUTHOR_EMAIL: "$(git log -1 --pretty=\"%aE\")"
+      KERNEL: LATEST
+      REPO_ROOT: ${{ github.workspace }}
+      REPO_PATH: ""
+    steps:
+      - uses: actions/checkout@v2
+      - if: ${{ github.repository == 'kernel-patches/vmtest' }}
+        name: Download bpf-next tree
+        uses: libbpf/ci/get-linux-source@master
+        with:
+          dest: '.kernel'
+      - if: ${{ github.repository == 'kernel-patches/vmtest' }}
+        name: Move linux source in place
+        shell: bash
+        run: |
+          rm -rf .kernel/.git
+          cp -rf .kernel/. .
+          rm -rf .kernel
+      - uses: libbpf/ci/patch-kernel@master
+        with:
+          patches-root: '${{ github.workspace }}/travis-ci/diffs'
+          repo-root: '${{ github.workspace }}'
+      - uses: ./.github/actions/vmtest
+        with:
+          arch: ${{ matrix.arch }}
+          toolchain: ${{ matrix.toolchain }}

tools/testing/selftests/bpf/prog_tests/test_tunnel.c

@@ -246,6 +246,7 @@ static void test_vxlan_tunnel(void)
 {
 	struct test_tunnel_kern *skel = NULL;
 	struct nstoken *nstoken;
+	int vxlan_ifindex_map_fd = -1;
 	int local_ip_map_fd = -1;
 	int set_src_prog_fd, get_src_prog_fd;
 	int set_dst_prog_fd;
@@ -277,6 +278,28 @@ static void test_vxlan_tunnel(void)
 	if (attach_tc_prog(&tc_hook, get_src_prog_fd, set_src_prog_fd))
 		goto done;
 
+	/* load and attach bpf prog to veth dev tc hook point */
+	ifindex = if_nametoindex("veth1");
+	if (!ASSERT_NEQ(ifindex, 0, "veth1 ifindex"))
+		goto done;
+	tc_hook.ifindex = ifindex;
+	set_dst_prog_fd = bpf_program__fd(skel->progs.veth_set_outer_dst);
+	if (!ASSERT_GE(set_dst_prog_fd, 0, "bpf_program__fd"))
+		goto done;
+	if (attach_tc_prog(&tc_hook, set_dst_prog_fd, -1))
+		goto done;
+
+	/* tell veth bpf prog to redirect to vxlan11 */
+	ifindex = if_nametoindex(VXLAN_TUNL_DEV1);
+	if (!ASSERT_NEQ(ifindex, 0, "vxlan11 ifindex"))
+		goto done;
+	vxlan_ifindex_map_fd = bpf_map__fd(skel->maps.vxlan_ifindex_map);
+	if (!ASSERT_GE(vxlan_ifindex_map_fd, 0, "bpf_map__fd"))
+		goto done;
+	err = bpf_map_update_elem(vxlan_ifindex_map_fd, &key, &ifindex, BPF_ANY);
+	if (!ASSERT_OK(err, "update bpf vxlan_ifindex_map"))
+		goto done;
+
 	/* load and attach prog set_md to tunnel dev tc hook point at_ns0 */
 	nstoken = open_netns("at_ns0");
 	if (!ASSERT_OK_PTR(nstoken, "setns src"))
@@ -311,6 +334,8 @@ static void test_vxlan_tunnel(void)
 	delete_vxlan_tunnel();
 	if (local_ip_map_fd >= 0)
 		close(local_ip_map_fd);
+	if (vxlan_ifindex_map_fd >= 0)
+		close(vxlan_ifindex_map_fd);
 	if (skel)
 		test_tunnel_kern__destroy(skel);
 }