selftests: bpf: test_kmod.sh: Pass parameters to the module

It's possible to specify particular tests for test_bpf.ko with
module parameters. Make it possible to pass the module parameters,
example:

test_kmod.sh test_range=1,3

Since magnitude tests take long time it can be reasonable to skip
them.

Signed-off-by: Yauheni Kaliuta <ykaliuta@redhat.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20220908120146.381218-1-ykaliuta@redhat.com

diff --git a/tools/testing/selftests/bpf/test_kmod.sh b/tools/testing/selftests/bpf/test_kmod.sh
index 4f6444b..d4a4279 100755 (executable)
--- a/tools/testing/selftests/bpf/test_kmod.sh
+++ b/tools/testing/selftests/bpf/test_kmod.sh
@@ -1,6 +1,11 @@
 #!/bin/sh
 # SPDX-License-Identifier: GPL-2.0
 
+# Usage:
+# ./test_kmod.sh [module_param]...
+# Ex.: ./test_kmod.sh test_range=1,3
+# All the parameters are passed to the kernel module.
+
 # Kselftest framework requirement - SKIP code is 4.
 ksft_skip=4
 
@@ -26,15 +31,15 @@ test_run()
        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
+               insmod ${OUTPUT}/lib/test_bpf.ko "$@" 2> /dev/null
                if [ $? -ne 0 ]; then
                        rc=1
                fi
        else
                # Use modprobe dry run to check for missing test_bpf module
-               if ! /sbin/modprobe -q -n test_bpf; then
+               if ! /sbin/modprobe -q -n test_bpf "$@"; then
                        echo "test_bpf: [SKIP]"
-               elif /sbin/modprobe -q test_bpf; then
+               elif /sbin/modprobe -q test_bpf "$@"; then
                        echo "test_bpf: ok"
                else
                        echo "test_bpf: [FAIL]"