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selftests: mptcp: diag: skip listen tests if not supported

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commit dc97251bf0 upstream.

Selftests are supposed to run on any kernels, including the old ones not
supporting all MPTCP features.

One of them is the listen diag dump support introduced by
commit 4fa39b701c ("mptcp: listen diag dump support").

It looks like there is no good pre-check to do here, i.e. dedicated
function available in kallsyms. Instead, we try to get info if nothing
is returned, the test is marked as skipped.

That's not ideal because something could be wrong with the feature and
instead of reporting an error, the test could be marked as skipped. If
we know in advanced that the feature is supposed to be supported, the
tester can set SELFTESTS_MPTCP_LIB_EXPECT_ALL_FEATURES env var to 1: in
this case the test will report an error instead of marking the test as
skipped if nothing is returned.

Link: https://github.com/multipath-tcp/mptcp_net-next/issues/368
Fixes: f2ae0fa68e ("selftests/mptcp: add diag listen tests")
Cc: stable@vger.kernel.org
Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Matthieu Baerts 2023-06-08 18:38:47 +02:00 committed by Greg Kroah-Hartman
parent 755c8857ab
commit 157dcb2000
1 changed files with 24 additions and 23 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

47
tools/testing/selftests/net/mptcp/diag.sh
View file

@ -42,27 +42,39 @@ fi
__chk_nr()
{
local condition="$1"
local command="$1"
local expected=$2
local msg nr
local msg="$3"
local skip="${4:-SKIP}"
local nr
shift 2
msg=$*
nr=$(ss -inmHMN $ns | $condition)
nr=$(eval $command)
printf "%-50s" "$msg"
if [ $nr != $expected ]; then
echo "[ fail ] expected $expected found $nr"
ret=$test_cnt
if [ $nr = "$skip" ] && ! mptcp_lib_expect_all_features; then
echo "[ skip ] Feature probably not supported"
else
echo "[ fail ] expected $expected found $nr"
ret=$test_cnt
fi
else
echo "[ ok ]"
fi
test_cnt=$((test_cnt+1))
}
__chk_msk_nr()
{
local condition=$1
shift 1
__chk_nr "ss -inmHMN $ns | $condition" "$@"
}
chk_msk_nr()
{
__chk_nr "grep -c token:" $*
__chk_msk_nr "grep -c token:" "$@"
}
wait_msk_nr()
@ -100,37 +112,26 @@ wait_msk_nr()
chk_msk_fallback_nr()
{
__chk_nr "grep -c fallback" $*
__chk_msk_nr "grep -c fallback" "$@"
}
chk_msk_remote_key_nr()
{
__chk_nr "grep -c remote_key" $*
__chk_msk_nr "grep -c remote_key" "$@"
}
__chk_listen()
{
local filter="$1"
local expected=$2
local msg="$3"
shift 2
msg=$*
nr=$(ss -N $ns -Ml "$filter" | grep -c LISTEN)
printf "%-50s" "$msg"
if [ $nr != $expected ]; then
echo "[ fail ] expected $expected found $nr"
ret=$test_cnt
else
echo "[ ok ]"
fi
__chk_nr "ss -N $ns -Ml '$filter' | grep -c LISTEN" "$expected" "$msg" 0
}
chk_msk_listen()
{
lport=$1
local msg="check for listen socket"
# destination port search should always return empty list
__chk_listen "dport $lport" 0 "listen match for dport $lport"