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https://git.kernel.org/pub/scm/linux/kernel/git/herbert/cryptodev-2.6.git
synced 2026-04-23 14:02:06 -04:00
d7a2522426
Add test coverage for the netconsole task name feature to the existing sysdata selftest script. This extends the test infrastructure to verify that task names are correctly appended when enabled and absent when disabled. The test validates that: - Task names appear in the expected format "taskname=<name>" - Task names are included when the feature is enabled - Task names are excluded when the feature is disabled - The feature works correctly alongside other sysdata fields like CPU Signed-off-by: Breno Leitao <leitao@debian.org> Reviewed-by: Simon Horman <horms@kernel.org> Signed-off-by: Paolo Abeni <pabeni@redhat.com>
205 lines
5.5 KiB
Bash
Executable File
205 lines
5.5 KiB
Bash
Executable File
#!/usr/bin/env bash
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# SPDX-License-Identifier: GPL-2.0
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# A test that makes sure that sysdata runtime CPU data is properly set
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# when a message is sent.
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#
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# There are 3 different tests, every time sent using a random CPU.
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# - Test #1
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# * Only enable cpu_nr sysdata feature.
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# - Test #2
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# * Keep cpu_nr sysdata feature enable and enable userdata.
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# - Test #3
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# * keep userdata enabled, and disable sysdata cpu_nr feature.
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#
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# Author: Breno Leitao <leitao@debian.org>
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set -euo pipefail
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SCRIPTDIR=$(dirname "$(readlink -e "${BASH_SOURCE[0]}")")
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source "${SCRIPTDIR}"/lib/sh/lib_netcons.sh
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# Enable the sysdata cpu_nr feature
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function set_cpu_nr() {
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if [[ ! -f "${NETCONS_PATH}/userdata/cpu_nr_enabled" ]]
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then
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echo "Populate CPU configfs path not available in ${NETCONS_PATH}/userdata/cpu_nr_enabled" >&2
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exit "${ksft_skip}"
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fi
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echo 1 > "${NETCONS_PATH}/userdata/cpu_nr_enabled"
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}
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# Enable the taskname to be appended to sysdata
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function set_taskname() {
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if [[ ! -f "${NETCONS_PATH}/userdata/taskname_enabled" ]]
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then
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echo "Not able to enable taskname sysdata append. Configfs not available in ${NETCONS_PATH}/userdata/taskname_enabled" >&2
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exit "${ksft_skip}"
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fi
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echo 1 > "${NETCONS_PATH}/userdata/taskname_enabled"
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}
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# Disable the sysdata cpu_nr feature
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function unset_cpu_nr() {
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echo 0 > "${NETCONS_PATH}/userdata/cpu_nr_enabled"
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}
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# Once called, taskname=<..> will not be appended anymore
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function unset_taskname() {
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echo 0 > "${NETCONS_PATH}/userdata/taskname_enabled"
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}
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# Test if MSG contains sysdata
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function validate_sysdata() {
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# OUTPUT_FILE will contain something like:
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# 6.11.1-0_fbk0_rc13_509_g30d75cea12f7,13,1822,115075213798,-;netconsole selftest: netcons_gtJHM
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# userdatakey=userdatavalue
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# cpu=X
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# taskname=<taskname>
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# Echo is what this test uses to create the message. See runtest()
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# function
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SENDER="echo"
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if [ ! -f "$OUTPUT_FILE" ]; then
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echo "FAIL: File was not generated." >&2
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exit "${ksft_fail}"
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fi
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if ! grep -q "${MSG}" "${OUTPUT_FILE}"; then
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echo "FAIL: ${MSG} not found in ${OUTPUT_FILE}" >&2
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cat "${OUTPUT_FILE}" >&2
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exit "${ksft_fail}"
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fi
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# Check if cpu=XX exists in the file and matches the one used
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# in taskset(1)
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if ! grep -q "cpu=${CPU}\+" "${OUTPUT_FILE}"; then
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echo "FAIL: 'cpu=${CPU}' not found in ${OUTPUT_FILE}" >&2
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cat "${OUTPUT_FILE}" >&2
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exit "${ksft_fail}"
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fi
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if ! grep -q "taskname=${SENDER}" "${OUTPUT_FILE}"; then
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echo "FAIL: 'taskname=echo' not found in ${OUTPUT_FILE}" >&2
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cat "${OUTPUT_FILE}" >&2
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exit "${ksft_fail}"
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fi
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rm "${OUTPUT_FILE}"
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pkill_socat
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}
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# Test if MSG content exists in OUTPUT_FILE but no `cpu=` and `taskname=`
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# strings
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function validate_no_sysdata() {
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if [ ! -f "$OUTPUT_FILE" ]; then
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echo "FAIL: File was not generated." >&2
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exit "${ksft_fail}"
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fi
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if ! grep -q "${MSG}" "${OUTPUT_FILE}"; then
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echo "FAIL: ${MSG} not found in ${OUTPUT_FILE}" >&2
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cat "${OUTPUT_FILE}" >&2
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exit "${ksft_fail}"
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fi
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if grep -q "cpu=" "${OUTPUT_FILE}"; then
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echo "FAIL: 'cpu= found in ${OUTPUT_FILE}" >&2
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cat "${OUTPUT_FILE}" >&2
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exit "${ksft_fail}"
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fi
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if grep -q "taskname=" "${OUTPUT_FILE}"; then
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echo "FAIL: 'taskname= found in ${OUTPUT_FILE}" >&2
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cat "${OUTPUT_FILE}" >&2
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exit "${ksft_fail}"
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fi
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rm "${OUTPUT_FILE}"
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}
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# Start socat, send the message and wait for the file to show up in the file
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# system
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function runtest {
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# Listen for netconsole port inside the namespace and destination
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# interface
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listen_port_and_save_to "${OUTPUT_FILE}" &
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# Wait for socat to start and listen to the port.
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wait_local_port_listen "${NAMESPACE}" "${PORT}" udp
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# Send the message
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taskset -c "${CPU}" echo "${MSG}: ${TARGET}" > /dev/kmsg
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# Wait until socat saves the file to disk
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busywait "${BUSYWAIT_TIMEOUT}" test -s "${OUTPUT_FILE}"
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}
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# ========== #
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# Start here #
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# ========== #
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modprobe netdevsim 2> /dev/null || true
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modprobe netconsole 2> /dev/null || true
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# Check for basic system dependency and exit if not found
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check_for_dependencies
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# This test also depends on taskset(1). Check for it before starting the test
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check_for_taskset
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# Set current loglevel to KERN_INFO(6), and default to KERN_NOTICE(5)
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echo "6 5" > /proc/sys/kernel/printk
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# Remove the namespace, interfaces and netconsole target on exit
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trap cleanup EXIT
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# Create one namespace and two interfaces
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set_network
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# Create a dynamic target for netconsole
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create_dynamic_target
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#====================================================
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# TEST #1
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# Send message from a random CPU
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#====================================================
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# Random CPU in the system
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CPU=$((RANDOM % $(nproc)))
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OUTPUT_FILE="/tmp/${TARGET}_1"
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MSG="Test #1 from CPU${CPU}"
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# Enable the auto population of cpu_nr
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set_cpu_nr
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# Enable taskname to be appended to sysdata
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set_taskname
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runtest
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# Make sure the message was received in the dst part
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# and exit
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validate_sysdata
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#====================================================
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# TEST #2
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# This test now adds userdata together with sysdata
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# ===================================================
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# Get a new random CPU
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CPU=$((RANDOM % $(nproc)))
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OUTPUT_FILE="/tmp/${TARGET}_2"
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MSG="Test #2 from CPU${CPU}"
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set_user_data
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runtest
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validate_sysdata
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# ===================================================
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# TEST #3
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# Unset cpu_nr, so, no CPU should be appended.
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# userdata is still set
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# ===================================================
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CPU=$((RANDOM % $(nproc)))
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OUTPUT_FILE="/tmp/${TARGET}_3"
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MSG="Test #3 from CPU${CPU}"
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# Enable the auto population of cpu_nr
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unset_cpu_nr
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unset_taskname
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runtest
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# At this time, cpu= shouldn't be present in the msg
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validate_no_sysdata
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exit "${ksft_pass}"
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