#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
set -e
set -u
unset KBUILD_OUTPUT
current_dir="$(realpath "$(dirname "$0")")"
build_dir="$current_dir"
build_include="$current_dir/include.sh"
if test -f "$build_include"; then
# this include will define "$mk_build_dir" as the location the test was
# built. We will need this if the tests are installed in a location
# other than the kernel source
source "$build_include"
build_dir="$mk_build_dir"
fi
# This test requires kernel source and the *.gcda data therein
# Locate the top level of the kernel source, and the net/rds
# subfolder with the appropriate *.gcno object files
ksrc_dir="$(realpath "$build_dir"/../../../../../)"
kconfig="$ksrc_dir/.config"
obj_dir="$ksrc_dir/net/rds"
GCOV_CMD=gcov
#check to see if the host has the required packages to generate a gcov report
check_gcov_env()
{
if ! which "$GCOV_CMD" > /dev/null 2>&1; then
echo "Warning: Could not find gcov. "
GENERATE_GCOV_REPORT=0
return
fi
# the gcov version must match the gcc version
GCC_VER=$(gcc -dumpfullversion)
GCOV_VER=$($GCOV_CMD -v | grep gcov | awk '{print $3}'| awk 'BEGIN {FS="-"}{print $1}')
if [ "$GCOV_VER" != "$GCC_VER" ]; then
#attempt to find a matching gcov version
GCOV_CMD=gcov-$(gcc -dumpversion)
if ! which "$GCOV_CMD" > /dev/null 2>&1; then
echo "Warning: Could not find an appropriate gcov installation. \
gcov version must match gcc version"
GENERATE_GCOV_REPORT=0
return
fi
#recheck version number of found gcov executable
GCOV_VER=$($GCOV_CMD -v | grep gcov | awk '{print $3}'| \
awk 'BEGIN {FS="-"}{print $1}')
if [ "$GCOV_VER" != "$GCC_VER" ]; then
echo "Warning: Could not find an appropriate gcov installation. \
gcov version must match gcc version"
GENERATE_GCOV_REPORT=0
else
echo "Warning: Mismatched gcc and gcov detected. Using $GCOV_CMD"
fi
fi
}
# Check to see if the kconfig has the required configs to generate a coverage report
check_gcov_conf()
{
if ! grep -x "CONFIG_GCOV_PROFILE_RDS=y" "$kconfig" > /dev/null 2>&1; then
echo "INFO: CONFIG_GCOV_PROFILE_RDS should be enabled for coverage reports"
GENERATE_GCOV_REPORT=0
fi
if ! grep -x "CONFIG_GCOV_KERNEL=y" "$kconfig" > /dev/null 2>&1; then
echo "INFO: CONFIG_GCOV_KERNEL should be enabled for coverage reports"
GENERATE_GCOV_REPORT=0
fi
if grep -x "CONFIG_GCOV_PROFILE_ALL=y" "$kconfig" > /dev/null 2>&1; then
echo "INFO: CONFIG_GCOV_PROFILE_ALL should be disabled for coverage reports"
GENERATE_GCOV_REPORT=0
fi
if [ "$GENERATE_GCOV_REPORT" -eq 0 ]; then
echo "To enable gcov reports, please run "\
"\"tools/testing/selftests/net/rds/config.sh -g\" and rebuild the kernel"
else
# if we have the required kernel configs, proceed to check the environment to
# ensure we have the required gcov packages
check_gcov_env
fi
}
# Kselftest framework requirement - SKIP code is 4.
check_conf_enabled() {
if ! grep -x "$1=y" "$kconfig" > /dev/null 2>&1; then
echo "selftests: [SKIP] This test requires $1 enabled"
echo "Please run tools/testing/selftests/net/rds/config.sh and rebuild the kernel"
exit 4
fi
}
check_conf_disabled() {
if grep -x "$1=y" "$kconfig" > /dev/null 2>&1; then
echo "selftests: [SKIP] This test requires $1 disabled"
echo "Please run tools/testing/selftests/net/rds/config.sh and rebuild the kernel"
exit 4
fi
}
check_conf() {
check_conf_enabled CONFIG_NET_SCH_NETEM
check_conf_enabled CONFIG_VETH
check_conf_enabled CONFIG_NET_NS
check_conf_enabled CONFIG_RDS_TCP
check_conf_enabled CONFIG_RDS
check_conf_disabled CONFIG_MODULES
}
check_env()
{
if ! test -d "$obj_dir"; then
echo "selftests: [SKIP] This test requires a kernel source tree"
exit 4
fi
if ! test -e "$kconfig"; then
echo "selftests: [SKIP] This test requires a configured kernel source tree"
exit 4
fi
if ! which strace > /dev/null 2>&1; then
echo "selftests: [SKIP] Could not run test without strace"
exit 4
fi
if ! which tcpdump > /dev/null 2>&1; then
echo "selftests: [SKIP] Could not run test without tcpdump"
exit 4
fi
if ! which python3 > /dev/null 2>&1; then
echo "selftests: [SKIP] Could not run test without python3"
exit 4
fi
python_major=$(python3 -c "import sys; print(sys.version_info[0])")
python_minor=$(python3 -c "import sys; print(sys.version_info[1])")
if [[ python_major -lt 3 || ( python_major -eq 3 && python_minor -lt 9 ) ]] ; then
echo "selftests: [SKIP] Could not run test without at least python3.9"
python3 -V
exit 4
fi
}
LOG_DIR="$current_dir"/rds_logs
PLOSS=0
PCORRUPT=0
PDUP=0
GENERATE_GCOV_REPORT=1
while getopts "d:l:c:u:" opt; do
case ${opt} in
d)
LOG_DIR=${OPTARG}
;;
l)
PLOSS=${OPTARG}
;;
c)
PCORRUPT=${OPTARG}
;;
u)
PDUP=${OPTARG}
;;
:)
echo "USAGE: run.sh [-d logdir] [-l packet_loss] [-c packet_corruption]" \
"[-u packet_duplcate] [-g]"
exit 1
;;
?)
echo "Invalid option: -${OPTARG}."
exit 1
;;
esac
done
check_env
check_conf
check_gcov_conf
rm -fr "$LOG_DIR"
TRACE_FILE="${LOG_DIR}/rds-strace.txt"
COVR_DIR="${LOG_DIR}/coverage/"
mkdir -p "$LOG_DIR"
mkdir -p "$COVR_DIR"
set +e
echo running RDS tests...
echo Traces will be logged to "$TRACE_FILE"
rm -f "$TRACE_FILE"
strace -T -tt -o "$TRACE_FILE" python3 "$(dirname "$0")/test.py" --timeout 400 -d "$LOG_DIR" \
-l "$PLOSS" -c "$PCORRUPT" -u "$PDUP"
test_rc=$?
dmesg > "${LOG_DIR}/dmesg.out"
if [ "$GENERATE_GCOV_REPORT" -eq 1 ]; then
echo saving coverage data...
(set +x; cd /sys/kernel/debug/gcov; find ./* -name '*.gcda' | \
while read -r f
do
cat < "/sys/kernel/debug/gcov/$f" > "/$f"
done)
echo running gcovr...
gcovr -s --html-details --gcov-executable "$GCOV_CMD" --gcov-ignore-parse-errors \
-o "${COVR_DIR}/gcovr" "${ksrc_dir}/net/rds/"
else
echo "Coverage report will be skipped"
fi
if [ "$test_rc" -eq 0 ]; then
echo "PASS: Test completed successfully"
else
echo "FAIL: Test failed"
fi
exit "$test_rc"
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