Makefile: pull kernel and efW versions from ci.yml

Update scripts to pull version information directly from ci.yml.
This means that only a single place needs to be updated now.
Putting it in the CI config isn't particularly pretty, but it's
the simplest thing to do because GH Actions has terrible support
for pulling data from other files.

Signed-off-by: Lorenz Bauer <[email protected]>

Author: lmb

.github/workflows/ci.yml

@@ -8,7 +8,7 @@ on:
 env:
   TMPDIR: /tmp
   CI_MAX_KERNEL_VERSION: '6.16'
-  CI_MAX_EFW_VERSION: '0.21.0'
+  CI_MAX_EFW_VERSION: '1.0.0-rc1'
   CI_MIN_CLANG_VERSION: '13'
   go_version: '~1.25'
   prev_go_version: '~1.24'

Makefile

@@ -120,8 +120,6 @@ testdata/loader-%-eb.elf: testdata/loader.c
 	$(STRIP) -g $@
 
 .PHONY: update-external-deps
-update-external-deps: export KERNEL_VERSION=6.16.0
-update-external-deps: export EFW_VERSION=v1.0.0-rc1
 update-external-deps:
 	./scripts/update-kernel-deps.sh
 	./scripts/update-efw-deps.sh

scripts/update-efw-deps.sh

@@ -2,6 +2,16 @@
 
 set -euo pipefail
 
+# Extract EFW version from CI workflow file
+efw_version=$(awk -F': ' '/CI_MAX_EFW_VERSION:/ {gsub(/['\''"]/, "", $2); print $2}' .github/workflows/ci.yml)
+
+if [ -z "$efw_version" ]; then
+	echo "Error: Could not extract CI_MAX_EFW_VERSION from .github/workflows/ci.yml" >&2
+	exit 1
+fi
+
+echo "Using EFW version: $efw_version"
+
 tmp=$(mktemp -d)
 
 cleanup() {
@@ -11,5 +21,5 @@ cleanup() {
 trap cleanup EXIT
 
 # Download and process ebpf_structs.h
-curl -fL "https://github.com/microsoft/ebpf-for-windows/raw/refs/tags/${EFW_VERSION}/include/ebpf_structs.h" -o "$tmp/ebpf_structs.h"
+curl -fL "https://github.com/microsoft/ebpf-for-windows/raw/refs/tags/Release-v${efw_version}/include/ebpf_structs.h" -o "$tmp/ebpf_structs.h"
 "./internal/cmd/genwinfunctions.awk" "$tmp/ebpf_structs.h" | gofmt > "./asm/func_win.go"

scripts/update-kernel-deps.sh

@@ -2,6 +2,16 @@
 
 set -euo pipefail
 
+# Extract kernel version from CI workflow file
+kernel_version=$(awk -F': ' '/CI_MAX_KERNEL_VERSION:/ {gsub(/['\''"]/, "", $2); print $2}' .github/workflows/ci.yml)
+
+if [ -z "$kernel_version" ]; then
+	echo "Error: Could not extract CI_MAX_KERNEL_VERSION from .github/workflows/ci.yml" >&2
+	exit 1
+fi
+
+echo "Using kernel version: $kernel_version"
+
 tmp=$(mktemp -d)
 
 cleanup() {
@@ -12,15 +22,15 @@ trap cleanup EXIT
 
 # Download and process libbpf.c
 # Truncate .0 patch versions (e.g., 6.16.0 -> 6.16, but leave 7.0 as 7.0)
-kernel_version_for_url="$KERNEL_VERSION"
-if [[ $KERNEL_VERSION =~ ^([0-9]+\.[0-9]+)\.0$ ]]; then
+kernel_version_for_url="$kernel_version"
+if [[ $kernel_version =~ ^([0-9]+\.[0-9]+)\.0$ ]]; then
 	kernel_version_for_url="${BASH_REMATCH[1]}"
 fi
 curl -fL "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/plain/tools/lib/bpf/libbpf.c?h=v$kernel_version_for_url" -o "$tmp/libbpf.c"
 "./internal/cmd/gensections.awk" "$tmp/libbpf.c" | gofmt > "./elf_sections.go"
 
 # Download and process vmlinux and btf_testmod
-go tool crane export "ghcr.io/cilium/ci-kernels:$KERNEL_VERSION" | tar -x -C "$tmp"
+go tool crane export "ghcr.io/cilium/ci-kernels:$kernel_version" | tar -x -C "$tmp"
 
 extract-vmlinux "$tmp/boot/vmlinuz" > "$tmp/vmlinux"