linux/tools/testing/selftests/bpf/test_kmod.sh
Naresh Kamboju 035d808f7c selftests: bpf: test_kmod.sh: check the module path before insmod
test_kmod.sh reported false failure when module not present.
Check test_bpf.ko is present in the path before loading it.

Two cases to be addressed here,
In the development process of test_bpf.c unit testing will be done by
developers by using "insmod $SRC_TREE/lib/test_bpf.ko"

On the other hand testers run full tests by installing modules on device
under test (DUT) and followed by modprobe to insert the modules accordingly.

Signed-off-by: Naresh Kamboju <naresh.kamboju@linaro.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-02-08 00:24:55 +01:00

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#!/bin/sh
# SPDX-License-Identifier: GPL-2.0
SRC_TREE=../../../../
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 ${SRC_TREE}/lib/test_bpf.ko ]; then
insmod ${SRC_TREE}/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