forked from Minki/linux
selftests: add openvswitch selftest suite
Previous commit resolves a WARN splat that can be difficult to reproduce, but with the ovs-dpctl.py utility, it can be trivial. Introduce a test case which creates a DP, and then downgrades the feature set. This will include a utility 'ovs-dpctl.py' that can be extended to do additional tests and diagnostics. Signed-off-by: Aaron Conole <aconole@redhat.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Aaron Conole
Paolo Abeni
parent
fd954cc191
commit
25f16c873f
@ -15436,6 +15436,7 @@ S: Maintained
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W: http://openvswitch.org
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F: include/uapi/linux/openvswitch.h
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F: net/openvswitch/
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F: tools/testing/selftests/net/openvswitch/
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OPERATING PERFORMANCE POINTS (OPP)
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M: Viresh Kumar <vireshk@kernel.org>
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@ -49,6 +49,7 @@ TARGETS += net
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TARGETS += net/af_unix
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TARGETS += net/forwarding
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TARGETS += net/mptcp
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TARGETS += net/openvswitch
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TARGETS += netfilter
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TARGETS += nsfs
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TARGETS += pidfd
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13
tools/testing/selftests/net/openvswitch/Makefile
Normal file
13
tools/testing/selftests/net/openvswitch/Makefile
Normal file
@ -0,0 +1,13 @@
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# SPDX-License-Identifier: GPL-2.0
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top_srcdir = ../../../../..
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CFLAGS = -Wall -Wl,--no-as-needed -O2 -g -I$(top_srcdir)/usr/include $(KHDR_INCLUDES)
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TEST_PROGS := openvswitch.sh
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TEST_FILES := ovs-dpctl.py
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EXTRA_CLEAN := test_netlink_checks
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include ../../lib.mk
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218
tools/testing/selftests/net/openvswitch/openvswitch.sh
Executable file
218
tools/testing/selftests/net/openvswitch/openvswitch.sh
Executable file
@ -0,0 +1,218 @@
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#!/bin/sh
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# SPDX-License-Identifier: GPL-2.0
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#
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# OVS kernel module self tests
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# Kselftest framework requirement - SKIP code is 4.
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ksft_skip=4
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PAUSE_ON_FAIL=no
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VERBOSE=0
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TRACING=0
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tests="
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netlink_checks ovsnl: validate netlink attrs and settings"
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info() {
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[ $VERBOSE = 0 ] || echo $*
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}
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ovs_base=`pwd`
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sbxs=
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sbx_add () {
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info "adding sandbox '$1'"
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sbxs="$sbxs $1"
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NO_BIN=0
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# Create sandbox.
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local d="$ovs_base"/$1
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if [ -e $d ]; then
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info "removing $d"
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rm -rf "$d"
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fi
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mkdir "$d" || return 1
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ovs_setenv $1
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}
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ovs_exit_sig() {
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[ -e ${ovs_dir}/cleanup ] && . "$ovs_dir/cleanup"
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}
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on_exit() {
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echo "$1" > ${ovs_dir}/cleanup.tmp
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cat ${ovs_dir}/cleanup >> ${ovs_dir}/cleanup.tmp
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mv ${ovs_dir}/cleanup.tmp ${ovs_dir}/cleanup
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}
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ovs_setenv() {
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sandbox=$1
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ovs_dir=$ovs_base${1:+/$1}; export ovs_dir
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test -e ${ovs_dir}/cleanup || : > ${ovs_dir}/cleanup
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}
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ovs_sbx() {
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if test "X$2" != X; then
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(ovs_setenv $1; shift; "$@" >> ${ovs_dir}/debug.log)
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else
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ovs_setenv $1
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fi
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}
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ovs_add_dp () {
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info "Adding DP/Bridge IF: sbx:$1 dp:$2 {$3, $4, $5}"
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sbxname="$1"
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shift
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ovs_sbx "$sbxname" python3 $ovs_base/ovs-dpctl.py add-dp $*
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on_exit "ovs_sbx $sbxname python3 $ovs_base/ovs-dpctl.py del-dp $1;"
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}
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usage() {
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echo
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echo "$0 [OPTIONS] [TEST]..."
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echo "If no TEST argument is given, all tests will be run."
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echo
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echo "Options"
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echo " -t: capture traffic via tcpdump"
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echo " -v: verbose"
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echo " -p: pause on failure"
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echo
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echo "Available tests${tests}"
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exit 1
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}
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# netlink_validation
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# - Create a dp
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# - check no warning with "old version" simulation
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test_netlink_checks () {
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sbx_add "test_netlink_checks" || return 1
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info "setting up new DP"
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ovs_add_dp "test_netlink_checks" nv0 || return 1
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# now try again
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PRE_TEST=$(dmesg | grep -E "RIP: [0-9a-fA-Fx]+:ovs_dp_cmd_new\+")
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ovs_add_dp "test_netlink_checks" nv0 -V 0 || return 1
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POST_TEST=$(dmesg | grep -E "RIP: [0-9a-fA-Fx]+:ovs_dp_cmd_new\+")
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if [ "$PRE_TEST" != "$POST_TEST" ]; then
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info "failed - gen warning"
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return 1
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fi
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return 0
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}
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run_test() {
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(
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tname="$1"
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tdesc="$2"
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if ! lsmod | grep openvswitch >/dev/null 2>&1; then
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stdbuf -o0 printf "TEST: %-60s [NOMOD]\n" "${tdesc}"
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return $ksft_skip
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fi
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if python3 ovs-dpctl.py -h 2>&1 | \
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grep "Need to install the python" >/dev/null 2>&1; then
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stdbuf -o0 printf "TEST: %-60s [PYLIB]\n" "${tdesc}"
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return $ksft_skip
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fi
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printf "TEST: %-60s [START]\n" "${tname}"
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unset IFS
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eval test_${tname}
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ret=$?
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if [ $ret -eq 0 ]; then
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printf "TEST: %-60s [ OK ]\n" "${tdesc}"
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ovs_exit_sig
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rm -rf "$ovs_dir"
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elif [ $ret -eq 1 ]; then
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printf "TEST: %-60s [FAIL]\n" "${tdesc}"
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if [ "${PAUSE_ON_FAIL}" = "yes" ]; then
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echo
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echo "Pausing. Logs in $ovs_dir/. Hit enter to continue"
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read a
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fi
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ovs_exit_sig
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[ "${PAUSE_ON_FAIL}" = "yes" ] || rm -rf "$ovs_dir"
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exit 1
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elif [ $ret -eq $ksft_skip ]; then
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printf "TEST: %-60s [SKIP]\n" "${tdesc}"
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elif [ $ret -eq 2 ]; then
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rm -rf test_${tname}
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run_test "$1" "$2"
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fi
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return $ret
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)
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ret=$?
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case $ret in
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0)
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[ $all_skipped = true ] && [ $exitcode=$ksft_skip ] && exitcode=0
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all_skipped=false
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;;
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$ksft_skip)
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[ $all_skipped = true ] && exitcode=$ksft_skip
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;;
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*)
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all_skipped=false
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exitcode=1
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;;
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esac
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return $ret
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}
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exitcode=0
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desc=0
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all_skipped=true
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while getopts :pvt o
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do
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case $o in
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p) PAUSE_ON_FAIL=yes;;
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v) VERBOSE=1;;
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t) if which tcpdump > /dev/null 2>&1; then
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TRACING=1
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else
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echo "=== tcpdump not available, tracing disabled"
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fi
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;;
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*) usage;;
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esac
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done
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shift $(($OPTIND-1))
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IFS="
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"
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for arg do
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# Check first that all requested tests are available before running any
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command -v > /dev/null "test_${arg}" || { echo "=== Test ${arg} not found"; usage; }
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done
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name=""
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desc=""
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for t in ${tests}; do
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[ "${name}" = "" ] && name="${t}" && continue
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[ "${desc}" = "" ] && desc="${t}"
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run_this=1
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for arg do
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[ "${arg}" != "${arg#--*}" ] && continue
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[ "${arg}" = "${name}" ] && run_this=1 && break
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run_this=0
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done
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if [ $run_this -eq 1 ]; then
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run_test "${name}" "${desc}"
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fi
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name=""
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desc=""
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done
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exit ${exitcode}
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351
tools/testing/selftests/net/openvswitch/ovs-dpctl.py
Normal file
351
tools/testing/selftests/net/openvswitch/ovs-dpctl.py
Normal file
@ -0,0 +1,351 @@
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#!/usr/bin/env python3
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# SPDX-License-Identifier: GPL-2.0
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# Controls the openvswitch module. Part of the kselftest suite, but
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# can be used for some diagnostic purpose as well.
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import argparse
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import errno
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import sys
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try:
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from pyroute2 import NDB
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from pyroute2.netlink import NLM_F_ACK
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from pyroute2.netlink import NLM_F_REQUEST
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from pyroute2.netlink import genlmsg
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from pyroute2.netlink import nla
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from pyroute2.netlink.exceptions import NetlinkError
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from pyroute2.netlink.generic import GenericNetlinkSocket
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except ModuleNotFoundError:
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print("Need to install the python pyroute2 package.")
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sys.exit(0)
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OVS_DATAPATH_FAMILY = "ovs_datapath"
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OVS_VPORT_FAMILY = "ovs_vport"
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OVS_FLOW_FAMILY = "ovs_flow"
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OVS_PACKET_FAMILY = "ovs_packet"
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OVS_METER_FAMILY = "ovs_meter"
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OVS_CT_LIMIT_FAMILY = "ovs_ct_limit"
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OVS_DATAPATH_VERSION = 2
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OVS_DP_CMD_NEW = 1
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OVS_DP_CMD_DEL = 2
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OVS_DP_CMD_GET = 3
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OVS_DP_CMD_SET = 4
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OVS_VPORT_CMD_NEW = 1
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OVS_VPORT_CMD_DEL = 2
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OVS_VPORT_CMD_GET = 3
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OVS_VPORT_CMD_SET = 4
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class ovs_dp_msg(genlmsg):
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# include the OVS version
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# We need a custom header rather than just being able to rely on
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# genlmsg because fields ends up not expressing everything correctly
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# if we use the canonical example of setting fields = (('customfield',),)
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fields = genlmsg.fields + (("dpifindex", "I"),)
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class OvsDatapath(GenericNetlinkSocket):
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OVS_DP_F_VPORT_PIDS = 1 << 1
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OVS_DP_F_DISPATCH_UPCALL_PER_CPU = 1 << 3
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class dp_cmd_msg(ovs_dp_msg):
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"""
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Message class that will be used to communicate with the kernel module.
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"""
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nla_map = (
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("OVS_DP_ATTR_UNSPEC", "none"),
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("OVS_DP_ATTR_NAME", "asciiz"),
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("OVS_DP_ATTR_UPCALL_PID", "uint32"),
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("OVS_DP_ATTR_STATS", "dpstats"),
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("OVS_DP_ATTR_MEGAFLOW_STATS", "megaflowstats"),
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("OVS_DP_ATTR_USER_FEATURES", "uint32"),
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("OVS_DP_ATTR_PAD", "none"),
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("OVS_DP_ATTR_MASKS_CACHE_SIZE", "uint32"),
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("OVS_DP_ATTR_PER_CPU_PIDS", "array(uint32)"),
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)
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class dpstats(nla):
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fields = (
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("hit", "=Q"),
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("missed", "=Q"),
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("lost", "=Q"),
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("flows", "=Q"),
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)
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class megaflowstats(nla):
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fields = (
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("mask_hit", "=Q"),
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("masks", "=I"),
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("padding", "=I"),
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("cache_hits", "=Q"),
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("pad1", "=Q"),
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)
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def __init__(self):
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GenericNetlinkSocket.__init__(self)
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self.bind(OVS_DATAPATH_FAMILY, OvsDatapath.dp_cmd_msg)
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def info(self, dpname, ifindex=0):
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msg = OvsDatapath.dp_cmd_msg()
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msg["cmd"] = OVS_DP_CMD_GET
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msg["version"] = OVS_DATAPATH_VERSION
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msg["reserved"] = 0
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msg["dpifindex"] = ifindex
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msg["attrs"].append(["OVS_DP_ATTR_NAME", dpname])
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try:
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reply = self.nlm_request(
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msg, msg_type=self.prid, msg_flags=NLM_F_REQUEST
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)
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reply = reply[0]
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except NetlinkError as ne:
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if ne.code == errno.ENODEV:
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reply = None
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else:
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raise ne
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return reply
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def create(self, dpname, shouldUpcall=False, versionStr=None):
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msg = OvsDatapath.dp_cmd_msg()
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msg["cmd"] = OVS_DP_CMD_NEW
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if versionStr is None:
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msg["version"] = OVS_DATAPATH_VERSION
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else:
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msg["version"] = int(versionStr.split(":")[0], 0)
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msg["reserved"] = 0
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msg["dpifindex"] = 0
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msg["attrs"].append(["OVS_DP_ATTR_NAME", dpname])
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dpfeatures = 0
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if versionStr is not None and versionStr.find(":") != -1:
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dpfeatures = int(versionStr.split(":")[1], 0)
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else:
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dpfeatures = OvsDatapath.OVS_DP_F_VPORT_PIDS
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msg["attrs"].append(["OVS_DP_ATTR_USER_FEATURES", dpfeatures])
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if not shouldUpcall:
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msg["attrs"].append(["OVS_DP_ATTR_UPCALL_PID", 0])
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try:
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reply = self.nlm_request(
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msg, msg_type=self.prid, msg_flags=NLM_F_REQUEST | NLM_F_ACK
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)
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reply = reply[0]
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except NetlinkError as ne:
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if ne.code == errno.EEXIST:
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reply = None
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else:
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raise ne
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return reply
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def destroy(self, dpname):
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msg = OvsDatapath.dp_cmd_msg()
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msg["cmd"] = OVS_DP_CMD_DEL
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msg["version"] = OVS_DATAPATH_VERSION
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msg["reserved"] = 0
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msg["dpifindex"] = 0
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msg["attrs"].append(["OVS_DP_ATTR_NAME", dpname])
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try:
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reply = self.nlm_request(
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msg, msg_type=self.prid, msg_flags=NLM_F_REQUEST | NLM_F_ACK
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)
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reply = reply[0]
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except NetlinkError as ne:
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if ne.code == errno.ENODEV:
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reply = None
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else:
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raise ne
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return reply
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class OvsVport(GenericNetlinkSocket):
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class ovs_vport_msg(ovs_dp_msg):
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nla_map = (
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("OVS_VPORT_ATTR_UNSPEC", "none"),
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("OVS_VPORT_ATTR_PORT_NO", "uint32"),
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("OVS_VPORT_ATTR_TYPE", "uint32"),
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("OVS_VPORT_ATTR_NAME", "asciiz"),
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("OVS_VPORT_ATTR_OPTIONS", "none"),
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("OVS_VPORT_ATTR_UPCALL_PID", "array(uint32)"),
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("OVS_VPORT_ATTR_STATS", "vportstats"),
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("OVS_VPORT_ATTR_PAD", "none"),
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("OVS_VPORT_ATTR_IFINDEX", "uint32"),
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("OVS_VPORT_ATTR_NETNSID", "uint32"),
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)
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class vportstats(nla):
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fields = (
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("rx_packets", "=Q"),
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("tx_packets", "=Q"),
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("rx_bytes", "=Q"),
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("tx_bytes", "=Q"),
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("rx_errors", "=Q"),
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("tx_errors", "=Q"),
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("rx_dropped", "=Q"),
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("tx_dropped", "=Q"),
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)
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def type_to_str(vport_type):
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if vport_type == 1:
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return "netdev"
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elif vport_type == 2:
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return "internal"
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elif vport_type == 3:
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return "gre"
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elif vport_type == 4:
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return "vxlan"
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elif vport_type == 5:
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return "geneve"
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return "unknown:%d" % vport_type
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def __init__(self):
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GenericNetlinkSocket.__init__(self)
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self.bind(OVS_VPORT_FAMILY, OvsVport.ovs_vport_msg)
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def info(self, vport_name, dpifindex=0, portno=None):
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msg = OvsVport.ovs_vport_msg()
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msg["cmd"] = OVS_VPORT_CMD_GET
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msg["version"] = OVS_DATAPATH_VERSION
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msg["reserved"] = 0
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msg["dpifindex"] = dpifindex
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if portno is None:
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msg["attrs"].append(["OVS_VPORT_ATTR_NAME", vport_name])
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else:
|
||||
msg["attrs"].append(["OVS_VPORT_ATTR_PORT_NO", portno])
|
||||
|
||||
try:
|
||||
reply = self.nlm_request(
|
||||
msg, msg_type=self.prid, msg_flags=NLM_F_REQUEST
|
||||
)
|
||||
reply = reply[0]
|
||||
except NetlinkError as ne:
|
||||
if ne.code == errno.ENODEV:
|
||||
reply = None
|
||||
else:
|
||||
raise ne
|
||||
return reply
|
||||
|
||||
|
||||
def print_ovsdp_full(dp_lookup_rep, ifindex, ndb=NDB()):
|
||||
dp_name = dp_lookup_rep.get_attr("OVS_DP_ATTR_NAME")
|
||||
base_stats = dp_lookup_rep.get_attr("OVS_DP_ATTR_STATS")
|
||||
megaflow_stats = dp_lookup_rep.get_attr("OVS_DP_ATTR_MEGAFLOW_STATS")
|
||||
user_features = dp_lookup_rep.get_attr("OVS_DP_ATTR_USER_FEATURES")
|
||||
masks_cache_size = dp_lookup_rep.get_attr("OVS_DP_ATTR_MASKS_CACHE_SIZE")
|
||||
|
||||
print("%s:" % dp_name)
|
||||
print(
|
||||
" lookups: hit:%d missed:%d lost:%d"
|
||||
% (base_stats["hit"], base_stats["missed"], base_stats["lost"])
|
||||
)
|
||||
print(" flows:%d" % base_stats["flows"])
|
||||
pkts = base_stats["hit"] + base_stats["missed"]
|
||||
avg = (megaflow_stats["mask_hit"] / pkts) if pkts != 0 else 0.0
|
||||
print(
|
||||
" masks: hit:%d total:%d hit/pkt:%f"
|
||||
% (megaflow_stats["mask_hit"], megaflow_stats["masks"], avg)
|
||||
)
|
||||
print(" caches:")
|
||||
print(" masks-cache: size:%d" % masks_cache_size)
|
||||
|
||||
if user_features is not None:
|
||||
print(" features: 0x%X" % user_features)
|
||||
|
||||
# port print out
|
||||
vpl = OvsVport()
|
||||
for iface in ndb.interfaces:
|
||||
rep = vpl.info(iface.ifname, ifindex)
|
||||
if rep is not None:
|
||||
print(
|
||||
" port %d: %s (%s)"
|
||||
% (
|
||||
rep.get_attr("OVS_VPORT_ATTR_PORT_NO"),
|
||||
rep.get_attr("OVS_VPORT_ATTR_NAME"),
|
||||
OvsVport.type_to_str(rep.get_attr("OVS_VPORT_ATTR_TYPE")),
|
||||
)
|
||||
)
|
||||
|
||||
|
||||
def main(argv):
|
||||
parser = argparse.ArgumentParser()
|
||||
parser.add_argument(
|
||||
"-v",
|
||||
"--verbose",
|
||||
action="count",
|
||||
help="Increment 'verbose' output counter.",
|
||||
)
|
||||
subparsers = parser.add_subparsers()
|
||||
|
||||
showdpcmd = subparsers.add_parser("show")
|
||||
showdpcmd.add_argument(
|
||||
"showdp", metavar="N", type=str, nargs="?", help="Datapath Name"
|
||||
)
|
||||
|
||||
adddpcmd = subparsers.add_parser("add-dp")
|
||||
adddpcmd.add_argument("adddp", help="Datapath Name")
|
||||
adddpcmd.add_argument(
|
||||
"-u",
|
||||
"--upcall",
|
||||
action="store_true",
|
||||
help="Leave open a reader for upcalls",
|
||||
)
|
||||
adddpcmd.add_argument(
|
||||
"-V",
|
||||
"--versioning",
|
||||
required=False,
|
||||
help="Specify a custom version / feature string",
|
||||
)
|
||||
|
||||
deldpcmd = subparsers.add_parser("del-dp")
|
||||
deldpcmd.add_argument("deldp", help="Datapath Name")
|
||||
|
||||
args = parser.parse_args()
|
||||
|
||||
ovsdp = OvsDatapath()
|
||||
ndb = NDB()
|
||||
|
||||
if hasattr(args, "showdp"):
|
||||
found = False
|
||||
for iface in ndb.interfaces:
|
||||
rep = None
|
||||
if args.showdp is None:
|
||||
rep = ovsdp.info(iface.ifname, 0)
|
||||
elif args.showdp == iface.ifname:
|
||||
rep = ovsdp.info(iface.ifname, 0)
|
||||
|
||||
if rep is not None:
|
||||
found = True
|
||||
print_ovsdp_full(rep, iface.index, ndb)
|
||||
|
||||
if not found:
|
||||
msg = "No DP found"
|
||||
if args.showdp is not None:
|
||||
msg += ":'%s'" % args.showdp
|
||||
print(msg)
|
||||
elif hasattr(args, "adddp"):
|
||||
rep = ovsdp.create(args.adddp, args.upcall, args.versioning)
|
||||
if rep is None:
|
||||
print("DP '%s' already exists" % args.adddp)
|
||||
else:
|
||||
print("DP '%s' added" % args.adddp)
|
||||
elif hasattr(args, "deldp"):
|
||||
ovsdp.destroy(args.deldp)
|
||||
|
||||
return 0
|
||||
|
||||
|
||||
if __name__ == "__main__":
|
||||
sys.exit(main(sys.argv))
|
||||
Loading…
Reference in New Issue
Block a user