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-rwxr-xr-xtools/testing/selftests/bpf/test_kmod.sh67
1 files changed, 67 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/test_kmod.sh b/tools/testing/selftests/bpf/test_kmod.sh
new file mode 100755
index 000000000..4f6444bcd
--- /dev/null
+++ b/tools/testing/selftests/bpf/test_kmod.sh
@@ -0,0 +1,67 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+
+# Kselftest framework requirement - SKIP code is 4.
+ksft_skip=4
+
+msg="skip all tests:"
+if [ "$(id -u)" != "0" ]; then
+ echo $msg please run this as root >&2
+ exit $ksft_skip
+fi
+
+if [ "$building_out_of_srctree" ]; then
+ # We are in linux-build/kselftest/bpf
+ OUTPUT=../../
+else
+ # We are in linux/tools/testing/selftests/bpf
+ OUTPUT=../../../../
+fi
+
+test_run()
+{
+ sysctl -w net.core.bpf_jit_enable=$1 2>&1 > /dev/null
+ sysctl -w net.core.bpf_jit_harden=$2 2>&1 > /dev/null
+
+ echo "[ JIT enabled:$1 hardened:$2 ]"
+ dmesg -C
+ if [ -f ${OUTPUT}/lib/test_bpf.ko ]; then
+ insmod ${OUTPUT}/lib/test_bpf.ko 2> /dev/null
+ if [ $? -ne 0 ]; then
+ rc=1
+ fi
+ else
+ # Use modprobe dry run to check for missing test_bpf module
+ if ! /sbin/modprobe -q -n test_bpf; then
+ echo "test_bpf: [SKIP]"
+ elif /sbin/modprobe -q test_bpf; then
+ echo "test_bpf: ok"
+ else
+ echo "test_bpf: [FAIL]"
+ rc=1
+ fi
+ fi
+ rmmod test_bpf 2> /dev/null
+ dmesg | grep FAIL
+}
+
+test_save()
+{
+ JE=`sysctl -n net.core.bpf_jit_enable`
+ JH=`sysctl -n net.core.bpf_jit_harden`
+}
+
+test_restore()
+{
+ sysctl -w net.core.bpf_jit_enable=$JE 2>&1 > /dev/null
+ sysctl -w net.core.bpf_jit_harden=$JH 2>&1 > /dev/null
+}
+
+rc=0
+test_save
+test_run 0 0
+test_run 1 0
+test_run 1 1
+test_run 1 2
+test_restore
+exit $rc