tools/testing/selftests/bpf/test_kmod.sh

   1 #!/bin/sh
   2 # SPDX-License-Identifier: GPL-2.0
   3
   4 SRC_TREE=../../../../
   5
   6 test_run()
   7 {
   8         sysctl -w net.core.bpf_jit_enable=$1 2>&1 > /dev/null
   9         sysctl -w net.core.bpf_jit_harden=$2 2>&1 > /dev/null
  10
  11         echo "[ JIT enabled:$1 hardened:$2 ]"
  12         dmesg -C
  13         if [ -f ${SRC_TREE}/lib/test_bpf.ko ]; then
  14                 insmod ${SRC_TREE}/lib/test_bpf.ko 2> /dev/null
  15                 if [ $? -ne 0 ]; then
  16                         rc=1
  17                 fi
  18         else
  19                 # Use modprobe dry run to check for missing test_bpf module
  20                 if ! /sbin/modprobe -q -n test_bpf; then
  21                         echo "test_bpf: [SKIP]"
  22                 elif /sbin/modprobe -q test_bpf; then
  23                         echo "test_bpf: ok"
  24                 else
  25                         echo "test_bpf: [FAIL]"
  26                         rc=1
  27                 fi
  28         fi
  29         rmmod  test_bpf 2> /dev/null
  30         dmesg | grep FAIL
  31 }
  32
  33 test_save()
  34 {
  35         JE=`sysctl -n net.core.bpf_jit_enable`
  36         JH=`sysctl -n net.core.bpf_jit_harden`
  37 }
  38
  39 test_restore()
  40 {
  41         sysctl -w net.core.bpf_jit_enable=$JE 2>&1 > /dev/null
  42         sysctl -w net.core.bpf_jit_harden=$JH 2>&1 > /dev/null
  43 }
  44
  45 rc=0
  46 test_save
  47 test_run 0 0
  48 test_run 1 0
  49 test_run 1 1
  50 test_run 1 2
  51 test_restore
  52 exit $rc