LXR linux/tools/testing/selftests/bpf/test

   1#!/bin/sh
   2# SPDX-License-Identifier: GPL-2.0
   3
   4# Kselftest framework requirement - SKIP code is 4.
   5ksft_skip=4
   6
   7msg="skip all tests:"
   8if [ "$(id -u)" != "0" ]; then
   9        echo $msg please run this as root >&2
  10        exit $ksft_skip
  11fi
  12
  13SRC_TREE=../../../../
  14
  15test_run()
  16{
  17        sysctl -w net.core.bpf_jit_enable=$1 2>&1 > /dev/null
  18        sysctl -w net.core.bpf_jit_harden=$2 2>&1 > /dev/null
  19
  20        echo "[ JIT enabled:$1 hardened:$2 ]"
  21        dmesg -C
  22        if [ -f ${SRC_TREE}/lib/test_bpf.ko ]; then
  23                insmod ${SRC_TREE}/lib/test_bpf.ko 2> /dev/null
  24                if [ $? -ne 0 ]; then
  25                        rc=1
  26                fi
  27        else
  28                # Use modprobe dry run to check for missing test_bpf module
  29                if ! /sbin/modprobe -q -n test_bpf; then
  30                        echo "test_bpf: [SKIP]"
  31                elif /sbin/modprobe -q test_bpf; then
  32                        echo "test_bpf: ok"
  33                else
  34                        echo "test_bpf: [FAIL]"
  35                        rc=1
  36                fi
  37        fi
  38        rmmod  test_bpf 2> /dev/null
  39        dmesg | grep FAIL
  40}
  41
  42test_save()
  43{
  44        JE=`sysctl -n net.core.bpf_jit_enable`
  45        JH=`sysctl -n net.core.bpf_jit_harden`
  46}
  47
  48test_restore()
  49{
  50        sysctl -w net.core.bpf_jit_enable=$JE 2>&1 > /dev/null
  51        sysctl -w net.core.bpf_jit_harden=$JH 2>&1 > /dev/null
  52}
  53
  54rc=0
  55test_save
  56test_run 0 0
  57test_run 1 0
  58test_run 1 1
  59test_run 1 2
  60test_restore
  61exit $rc
  62