Selftests are supposed to run on any kernels, including the old ones not
supporting all MPTCP features.
One of them is the MPTCP MIB counters introduced in commit fc518953bc9c
("mptcp: add and use MIB counter infrastructure") and more later. The
MPTCP Join selftest heavily relies on these counters.
If a counter is not supported by the kernel, it is not displayed when
using 'nstat -z'. We can then detect that and skip the verification. A
new helper (get_counter()) has been added to do the required checks and
return an error if the counter is not available.
Note that if we expect to have these features available and if
SELFTESTS_MPTCP_LIB_EXPECT_ALL_FEATURES env var is set to 1, the tests
will be marked as failed instead of skipped.
Link: https://github.com/multipath-tcp/mptcp_net-next/issues/368
Fixes: b08fbf241064 ("selftests: add test-cases for MPTCP MP_JOIN")
Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
---
tools/testing/selftests/net/mptcp/mptcp_join.sh | 251 ++++++++++++++----------
1 file changed, 142 insertions(+), 109 deletions(-)
diff --git a/tools/testing/selftests/net/mptcp/mptcp_join.sh b/tools/testing/selftests/net/mptcp/mptcp_join.sh
index 1a8f7c6fa988..73c513f1e808 100755
--- a/tools/testing/selftests/net/mptcp/mptcp_join.sh
+++ b/tools/testing/selftests/net/mptcp/mptcp_join.sh
@@ -505,11 +505,25 @@ wait_local_port_listen()
done
}
+# $1: ns ; $2: counter
+get_counter()
+{
+ local ns="${1}"
+ local counter="${2}"
+ local count
+
+ count=$(ip netns exec ${ns} nstat -asz "${counter}" | awk 'NR==1 {next} {print $2}')
+ if [ -z "${count}" ]; then
+ mptcp_lib_fail_if_expected_feature "${counter} counter"
+ return 1
+ fi
+
+ echo "${count}"
+}
+
rm_addr_count()
{
- local ns=${1}
-
- ip netns exec ${ns} nstat -as | grep MPTcpExtRmAddr | awk '{print $2}'
+ get_counter "${1}" "MPTcpExtRmAddr"
}
# $1: ns, $2: old rm_addr counter in $ns
@@ -532,11 +546,11 @@ wait_mpj()
local ns="${1}"
local cnt old_cnt
- old_cnt=$(ip netns exec ${ns} nstat -as | grep MPJoinAckRx | awk '{print $2}')
+ old_cnt=$(get_counter ${ns} "MPTcpExtMPJoinAckRx")
local i
for i in $(seq 10); do
- cnt=$(ip netns exec ${ns} nstat -as | grep MPJoinAckRx | awk '{print $2}')
+ cnt=$(get_counter ${ns} "MPTcpExtMPJoinAckRx")
[ "$cnt" = "${old_cnt}" ] || break
sleep 0.1
done
@@ -1185,12 +1199,13 @@ chk_csum_nr()
fi
printf "%-${nr_blank}s %s" " " "sum"
- count=$(ip netns exec $ns1 nstat -as | grep MPTcpExtDataCsumErr | awk '{print $2}')
- [ -z "$count" ] && count=0
+ count=$(get_counter ${ns1} "MPTcpExtDataCsumErr")
if [ "$count" != "$csum_ns1" ]; then
extra_msg="$extra_msg ns1=$count"
fi
- if { [ "$count" != $csum_ns1 ] && [ $allow_multi_errors_ns1 -eq 0 ]; } ||
+ if [ -z "$count" ]; then
+ echo -n "[skip]"
+ elif { [ "$count" != $csum_ns1 ] && [ $allow_multi_errors_ns1 -eq 0 ]; } ||
{ [ "$count" -lt $csum_ns1 ] && [ $allow_multi_errors_ns1 -eq 1 ]; }; then
echo "[fail] got $count data checksum error[s] expected $csum_ns1"
fail_test
@@ -1198,12 +1213,13 @@ chk_csum_nr()
echo -n "[ ok ]"
fi
echo -n " - csum "
- count=$(ip netns exec $ns2 nstat -as | grep MPTcpExtDataCsumErr | awk '{print $2}')
- [ -z "$count" ] && count=0
+ count=$(get_counter ${ns2} "MPTcpExtDataCsumErr")
if [ "$count" != "$csum_ns2" ]; then
extra_msg="$extra_msg ns2=$count"
fi
- if { [ "$count" != $csum_ns2 ] && [ $allow_multi_errors_ns2 -eq 0 ]; } ||
+ if [ -z "$count" ]; then
+ echo -n "[skip]"
+ elif { [ "$count" != $csum_ns2 ] && [ $allow_multi_errors_ns2 -eq 0 ]; } ||
{ [ "$count" -lt $csum_ns2 ] && [ $allow_multi_errors_ns2 -eq 1 ]; }; then
echo "[fail] got $count data checksum error[s] expected $csum_ns2"
fail_test
@@ -1242,12 +1258,13 @@ chk_fail_nr()
fi
printf "%-${nr_blank}s %s" " " "ftx"
- count=$(ip netns exec $ns_tx nstat -as | grep MPTcpExtMPFailTx | awk '{print $2}')
- [ -z "$count" ] && count=0
+ count=$(get_counter ${ns_tx} "MPTcpExtMPFailTx")
if [ "$count" != "$fail_tx" ]; then
extra_msg="$extra_msg,tx=$count"
fi
- if { [ "$count" != "$fail_tx" ] && [ $allow_tx_lost -eq 0 ]; } ||
+ if [ -z "$count" ]; then
+ echo -n "[skip]"
+ elif { [ "$count" != "$fail_tx" ] && [ $allow_tx_lost -eq 0 ]; } ||
{ [ "$count" -gt "$fail_tx" ] && [ $allow_tx_lost -eq 1 ]; }; then
echo "[fail] got $count MP_FAIL[s] TX expected $fail_tx"
fail_test
@@ -1256,12 +1273,13 @@ chk_fail_nr()
fi
echo -n " - failrx"
- count=$(ip netns exec $ns_rx nstat -as | grep MPTcpExtMPFailRx | awk '{print $2}')
- [ -z "$count" ] && count=0
+ count=$(get_counter ${ns_rx} "MPTcpExtMPFailRx")
if [ "$count" != "$fail_rx" ]; then
extra_msg="$extra_msg,rx=$count"
fi
- if { [ "$count" != "$fail_rx" ] && [ $allow_rx_lost -eq 0 ]; } ||
+ if [ -z "$count" ]; then
+ echo -n "[skip]"
+ elif { [ "$count" != "$fail_rx" ] && [ $allow_rx_lost -eq 0 ]; } ||
{ [ "$count" -gt "$fail_rx" ] && [ $allow_rx_lost -eq 1 ]; }; then
echo "[fail] got $count MP_FAIL[s] RX expected $fail_rx"
fail_test
@@ -1289,10 +1307,11 @@ chk_fclose_nr()
fi
printf "%-${nr_blank}s %s" " " "ctx"
- count=$(ip netns exec $ns_tx nstat -as | grep MPTcpExtMPFastcloseTx | awk '{print $2}')
- [ -z "$count" ] && count=0
- [ "$count" != "$fclose_tx" ] && extra_msg="$extra_msg,tx=$count"
- if [ "$count" != "$fclose_tx" ]; then
+ count=$(get_counter ${ns_tx} "MPTcpExtMPFastcloseTx")
+ if [ -z "$count" ]; then
+ echo -n "[skip]"
+ elif [ "$count" != "$fclose_tx" ]; then
+ extra_msg="$extra_msg,tx=$count"
echo "[fail] got $count MP_FASTCLOSE[s] TX expected $fclose_tx"
fail_test
else
@@ -1300,10 +1319,11 @@ chk_fclose_nr()
fi
echo -n " - fclzrx"
- count=$(ip netns exec $ns_rx nstat -as | grep MPTcpExtMPFastcloseRx | awk '{print $2}')
- [ -z "$count" ] && count=0
- [ "$count" != "$fclose_rx" ] && extra_msg="$extra_msg,rx=$count"
- if [ "$count" != "$fclose_rx" ]; then
+ count=$(get_counter ${ns_rx} "MPTcpExtMPFastcloseRx")
+ if [ -z "$count" ]; then
+ echo -n "[skip]"
+ elif [ "$count" != "$fclose_rx" ]; then
+ extra_msg="$extra_msg,rx=$count"
echo "[fail] got $count MP_FASTCLOSE[s] RX expected $fclose_rx"
fail_test
else
@@ -1330,9 +1350,10 @@ chk_rst_nr()
fi
printf "%-${nr_blank}s %s" " " "rtx"
- count=$(ip netns exec $ns_tx nstat -as | grep MPTcpExtMPRstTx | awk '{print $2}')
- [ -z "$count" ] && count=0
- if [ $count -lt $rst_tx ]; then
+ count=$(get_counter ${ns_tx} "MPTcpExtMPRstTx")
+ if [ -z "$count" ]; then
+ echo -n "[skip]"
+ elif [ $count -lt $rst_tx ]; then
echo "[fail] got $count MP_RST[s] TX expected $rst_tx"
fail_test
else
@@ -1340,9 +1361,10 @@ chk_rst_nr()
fi
echo -n " - rstrx "
- count=$(ip netns exec $ns_rx nstat -as | grep MPTcpExtMPRstRx | awk '{print $2}')
- [ -z "$count" ] && count=0
- if [ "$count" -lt "$rst_rx" ]; then
+ count=$(get_counter ${ns_rx} "MPTcpExtMPRstRx")
+ if [ -z "$count" ]; then
+ echo -n "[skip]"
+ elif [ "$count" -lt "$rst_rx" ]; then
echo "[fail] got $count MP_RST[s] RX expected $rst_rx"
fail_test
else
@@ -1359,9 +1381,10 @@ chk_infi_nr()
local count
printf "%-${nr_blank}s %s" " " "itx"
- count=$(ip netns exec $ns2 nstat -as | grep InfiniteMapTx | awk '{print $2}')
- [ -z "$count" ] && count=0
- if [ "$count" != "$infi_tx" ]; then
+ count=$(get_counter ${ns2} "MPTcpExtInfiniteMapTx")
+ if [ -z "$count" ]; then
+ echo -n "[skip]"
+ elif [ "$count" != "$infi_tx" ]; then
echo "[fail] got $count infinite map[s] TX expected $infi_tx"
fail_test
else
@@ -1369,9 +1392,10 @@ chk_infi_nr()
fi
echo -n " - infirx"
- count=$(ip netns exec $ns1 nstat -as | grep InfiniteMapRx | awk '{print $2}')
- [ -z "$count" ] && count=0
- if [ "$count" != "$infi_rx" ]; then
+ count=$(get_counter ${ns1} "MPTcpExtInfiniteMapRx")
+ if [ -z "$count" ]; then
+ echo "[skip]"
+ elif [ "$count" != "$infi_rx" ]; then
echo "[fail] got $count infinite map[s] RX expected $infi_rx"
fail_test
else
@@ -1399,9 +1423,10 @@ chk_join_nr()
fi
printf "%03u %-36s %s" "${TEST_COUNT}" "${title}" "syn"
- count=$(ip netns exec $ns1 nstat -as | grep MPTcpExtMPJoinSynRx | awk '{print $2}')
- [ -z "$count" ] && count=0
- if [ "$count" != "$syn_nr" ]; then
+ count=$(get_counter ${ns1} "MPTcpExtMPJoinSynRx")
+ if [ -z "$count" ]; then
+ echo -n "[skip]"
+ elif [ "$count" != "$syn_nr" ]; then
echo "[fail] got $count JOIN[s] syn expected $syn_nr"
fail_test
else
@@ -1410,9 +1435,10 @@ chk_join_nr()
echo -n " - synack"
with_cookie=$(ip netns exec $ns2 sysctl -n net.ipv4.tcp_syncookies)
- count=$(ip netns exec $ns2 nstat -as | grep MPTcpExtMPJoinSynAckRx | awk '{print $2}')
- [ -z "$count" ] && count=0
- if [ "$count" != "$syn_ack_nr" ]; then
+ count=$(get_counter ${ns2} "MPTcpExtMPJoinSynAckRx")
+ if [ -z "$count" ]; then
+ echo -n "[skip]"
+ elif [ "$count" != "$syn_ack_nr" ]; then
# simult connections exceeding the limit with cookie enabled could go up to
# synack validation as the conn limit can be enforced reliably only after
# the subflow creation
@@ -1427,9 +1453,10 @@ chk_join_nr()
fi
echo -n " - ack"
- count=$(ip netns exec $ns1 nstat -as | grep MPTcpExtMPJoinAckRx | awk '{print $2}')
- [ -z "$count" ] && count=0
- if [ "$count" != "$ack_nr" ]; then
+ count=$(get_counter ${ns1} "MPTcpExtMPJoinAckRx")
+ if [ -z "$count" ]; then
+ echo "[skip]"
+ elif [ "$count" != "$ack_nr" ]; then
echo "[fail] got $count JOIN[s] ack expected $ack_nr"
fail_test
else
@@ -1459,12 +1486,12 @@ chk_stale_nr()
local recover_nr
printf "%-${nr_blank}s %-18s" " " "stale"
- stale_nr=$(ip netns exec $ns nstat -as | grep MPTcpExtSubflowStale | awk '{print $2}')
- [ -z "$stale_nr" ] && stale_nr=0
- recover_nr=$(ip netns exec $ns nstat -as | grep MPTcpExtSubflowRecover | awk '{print $2}')
- [ -z "$recover_nr" ] && recover_nr=0
- if [ $stale_nr -lt $stale_min ] ||
+ stale_nr=$(get_counter ${ns} "MPTcpExtSubflowStale")
+ recover_nr=$(get_counter ${ns} "MPTcpExtSubflowRecover")
+ if [ -z "$stale_nr" ] || [ -z "$recover_nr" ]; then
+ echo "[skip]"
+ elif [ $stale_nr -lt $stale_min ] ||
{ [ $stale_max -gt 0 ] && [ $stale_nr -gt $stale_max ]; } ||
[ $((stale_nr - recover_nr)) -ne $stale_delta ]; then
echo "[fail] got $stale_nr stale[s] $recover_nr recover[s], " \
@@ -1499,12 +1526,12 @@ chk_add_nr()
timeout=$(ip netns exec $ns1 sysctl -n net.mptcp.add_addr_timeout)
printf "%-${nr_blank}s %s" " " "add"
- count=$(ip netns exec $ns2 nstat -as MPTcpExtAddAddr | grep MPTcpExtAddAddr | awk '{print $2}')
- [ -z "$count" ] && count=0
-
+ count=$(get_counter ${ns2} "MPTcpExtAddAddr")
+ if [ -z "$count" ]; then
+ echo -n "[skip]"
# if the test configured a short timeout tolerate greater then expected
# add addrs options, due to retransmissions
- if [ "$count" != "$add_nr" ] && { [ "$timeout" -gt 1 ] || [ "$count" -lt "$add_nr" ]; }; then
+ elif [ "$count" != "$add_nr" ] && { [ "$timeout" -gt 1 ] || [ "$count" -lt "$add_nr" ]; }; then
echo "[fail] got $count ADD_ADDR[s] expected $add_nr"
fail_test
else
@@ -1512,9 +1539,10 @@ chk_add_nr()
fi
echo -n " - echo "
- count=$(ip netns exec $ns1 nstat -as MPTcpExtEchoAdd | grep MPTcpExtEchoAdd | awk '{print $2}')
- [ -z "$count" ] && count=0
- if [ "$count" != "$echo_nr" ]; then
+ count=$(get_counter ${ns1} "MPTcpExtEchoAdd")
+ if [ -z "$count" ]; then
+ echo -n "[skip]"
+ elif [ "$count" != "$echo_nr" ]; then
echo "[fail] got $count ADD_ADDR echo[s] expected $echo_nr"
fail_test
else
@@ -1523,9 +1551,10 @@ chk_add_nr()
if [ $port_nr -gt 0 ]; then
echo -n " - pt "
- count=$(ip netns exec $ns2 nstat -as | grep MPTcpExtPortAdd | awk '{print $2}')
- [ -z "$count" ] && count=0
- if [ "$count" != "$port_nr" ]; then
+ count=$(get_counter ${ns2} "MPTcpExtPortAdd")
+ if [ -z "$count" ]; then
+ echo "[skip]"
+ elif [ "$count" != "$port_nr" ]; then
echo "[fail] got $count ADD_ADDR[s] with a port-number expected $port_nr"
fail_test
else
@@ -1533,10 +1562,10 @@ chk_add_nr()
fi
printf "%-${nr_blank}s %s" " " "syn"
- count=$(ip netns exec $ns1 nstat -as | grep MPTcpExtMPJoinPortSynRx |
- awk '{print $2}')
- [ -z "$count" ] && count=0
- if [ "$count" != "$syn_nr" ]; then
+ count=$(get_counter ${ns1} "MPTcpExtMPJoinPortSynRx")
+ if [ -z "$count" ]; then
+ echo -n "[skip]"
+ elif [ "$count" != "$syn_nr" ]; then
echo "[fail] got $count JOIN[s] syn with a different \
port-number expected $syn_nr"
fail_test
@@ -1545,10 +1574,10 @@ chk_add_nr()
fi
echo -n " - synack"
- count=$(ip netns exec $ns2 nstat -as | grep MPTcpExtMPJoinPortSynAckRx |
- awk '{print $2}')
- [ -z "$count" ] && count=0
- if [ "$count" != "$syn_ack_nr" ]; then
+ count=$(get_counter ${ns2} "MPTcpExtMPJoinPortSynAckRx")
+ if [ -z "$count" ]; then
+ echo -n "[skip]"
+ elif [ "$count" != "$syn_ack_nr" ]; then
echo "[fail] got $count JOIN[s] synack with a different \
port-number expected $syn_ack_nr"
fail_test
@@ -1557,10 +1586,10 @@ chk_add_nr()
fi
echo -n " - ack"
- count=$(ip netns exec $ns1 nstat -as | grep MPTcpExtMPJoinPortAckRx |
- awk '{print $2}')
- [ -z "$count" ] && count=0
- if [ "$count" != "$ack_nr" ]; then
+ count=$(get_counter ${ns1} "MPTcpExtMPJoinPortAckRx")
+ if [ -z "$count" ]; then
+ echo "[skip]"
+ elif [ "$count" != "$ack_nr" ]; then
echo "[fail] got $count JOIN[s] ack with a different \
port-number expected $ack_nr"
fail_test
@@ -1569,10 +1598,10 @@ chk_add_nr()
fi
printf "%-${nr_blank}s %s" " " "syn"
- count=$(ip netns exec $ns1 nstat -as | grep MPTcpExtMismatchPortSynRx |
- awk '{print $2}')
- [ -z "$count" ] && count=0
- if [ "$count" != "$mis_syn_nr" ]; then
+ count=$(get_counter ${ns1} "MPTcpExtMismatchPortSynRx")
+ if [ -z "$count" ]; then
+ echo -n "[skip]"
+ elif [ "$count" != "$mis_syn_nr" ]; then
echo "[fail] got $count JOIN[s] syn with a mismatched \
port-number expected $mis_syn_nr"
fail_test
@@ -1581,10 +1610,10 @@ chk_add_nr()
fi
echo -n " - ack "
- count=$(ip netns exec $ns1 nstat -as | grep MPTcpExtMismatchPortAckRx |
- awk '{print $2}')
- [ -z "$count" ] && count=0
- if [ "$count" != "$mis_ack_nr" ]; then
+ count=$(get_counter ${ns1} "MPTcpExtMismatchPortAckRx")
+ if [ -z "$count" ]; then
+ echo "[skip]"
+ elif [ "$count" != "$mis_ack_nr" ]; then
echo "[fail] got $count JOIN[s] ack with a mismatched \
port-number expected $mis_ack_nr"
fail_test
@@ -1606,12 +1635,12 @@ chk_add_tx_nr()
timeout=$(ip netns exec $ns1 sysctl -n net.mptcp.add_addr_timeout)
printf "%-${nr_blank}s %s" " " "add TX"
- count=$(ip netns exec $ns1 nstat -as MPTcpExtAddAddrTx | grep MPTcpExtAddAddrTx | awk '{print $2}')
- [ -z "$count" ] && count=0
-
+ count=$(get_counter ${ns1} "MPTcpExtAddAddrTx")
+ if [ -z "$count" ]; then
+ echo -n "[skip]"
# if the test configured a short timeout tolerate greater then expected
# add addrs options, due to retransmissions
- if [ "$count" != "$add_tx_nr" ] && { [ "$timeout" -gt 1 ] || [ "$count" -lt "$add_tx_nr" ]; }; then
+ elif [ "$count" != "$add_tx_nr" ] && { [ "$timeout" -gt 1 ] || [ "$count" -lt "$add_tx_nr" ]; }; then
echo "[fail] got $count ADD_ADDR[s] TX, expected $add_tx_nr"
fail_test
else
@@ -1619,9 +1648,10 @@ chk_add_tx_nr()
fi
echo -n " - echo TX "
- count=$(ip netns exec $ns2 nstat -as MPTcpExtEchoAddTx | grep MPTcpExtEchoAddTx | awk '{print $2}')
- [ -z "$count" ] && count=0
- if [ "$count" != "$echo_tx_nr" ]; then
+ count=$(get_counter ${ns2} "MPTcpExtEchoAddTx")
+ if [ -z "$count" ]; then
+ echo "[skip]"
+ elif [ "$count" != "$echo_tx_nr" ]; then
echo "[fail] got $count ADD_ADDR echo[s] TX, expected $echo_tx_nr"
fail_test
else
@@ -1695,9 +1725,10 @@ chk_rm_nr()
fi
printf "%-${nr_blank}s %s" " " "rm "
- count=$(ip netns exec $addr_ns nstat -as MPTcpExtRmAddr | grep MPTcpExtRmAddr | awk '{print $2}')
- [ -z "$count" ] && count=0
- if [ "$count" != "$rm_addr_nr" ]; then
+ count=$(get_counter ${addr_ns} "MPTcpExtRmAddr")
+ if [ -z "$count" ]; then
+ echo -n "[skip]"
+ elif [ "$count" != "$rm_addr_nr" ]; then
echo "[fail] got $count RM_ADDR[s] expected $rm_addr_nr"
fail_test
else
@@ -1705,12 +1736,13 @@ chk_rm_nr()
fi
echo -n " - rmsf "
- count=$(ip netns exec $subflow_ns nstat -as | grep MPTcpExtRmSubflow | awk '{print $2}')
- [ -z "$count" ] && count=0
- if [ -n "$simult" ]; then
+ count=$(get_counter ${subflow_ns} "MPTcpExtRmSubflow")
+ if [ -z "$count" ]; then
+ echo -n "[skip]"
+ elif [ -n "$simult" ]; then
local cnt suffix
- cnt=$(ip netns exec $addr_ns nstat -as | grep MPTcpExtRmSubflow | awk '{print $2}')
+ cnt=$(get_counter ${addr_ns} "MPTcpExtRmSubflow")
# in case of simult flush, the subflow removal count on each side is
# unreliable
@@ -1719,14 +1751,12 @@ chk_rm_nr()
[ "$count" != "$rm_subflow_nr" ] && suffix="$count in [$rm_subflow_nr:$((rm_subflow_nr*2))]"
if [ $count -ge "$rm_subflow_nr" ] && \
[ "$count" -le "$((rm_subflow_nr *2 ))" ]; then
- echo "[ ok ] $suffix"
+ echo -n "[ ok ] $suffix"
else
echo "[fail] got $count RM_SUBFLOW[s] expected in range [$rm_subflow_nr:$((rm_subflow_nr*2))]"
fail_test
fi
- return
- fi
- if [ "$count" != "$rm_subflow_nr" ]; then
+ elif [ "$count" != "$rm_subflow_nr" ]; then
echo "[fail] got $count RM_SUBFLOW[s] expected $rm_subflow_nr"
fail_test
else
@@ -1741,9 +1771,10 @@ chk_rm_tx_nr()
local rm_addr_tx_nr=$1
printf "%-${nr_blank}s %s" " " "rm TX "
- count=$(ip netns exec $ns2 nstat -as MPTcpExtRmAddrTx | grep MPTcpExtRmAddrTx | awk '{print $2}')
- [ -z "$count" ] && count=0
- if [ "$count" != "$rm_addr_tx_nr" ]; then
+ count=$(get_counter ${ns2} "MPTcpExtRmAddrTx")
+ if [ -z "$count" ]; then
+ echo -n "[skip]"
+ elif [ "$count" != "$rm_addr_tx_nr" ]; then
echo "[fail] got $count RM_ADDR[s] expected $rm_addr_tx_nr"
fail_test
else
@@ -1780,9 +1811,10 @@ chk_prio_nr()
local count
printf "%-${nr_blank}s %s" " " "ptx"
- count=$(ip netns exec $ns1 nstat -as | grep MPTcpExtMPPrioTx | awk '{print $2}')
- [ -z "$count" ] && count=0
- if [ "$count" != "$mp_prio_nr_tx" ]; then
+ count=$(get_counter ${ns1} "MPTcpExtMPPrioTx")
+ if [ -z "$count" ]; then
+ echo -n "[skip]"
+ elif [ "$count" != "$mp_prio_nr_tx" ]; then
echo "[fail] got $count MP_PRIO[s] TX expected $mp_prio_nr_tx"
fail_test
else
@@ -1790,9 +1822,10 @@ chk_prio_nr()
fi
echo -n " - prx "
- count=$(ip netns exec $ns1 nstat -as | grep MPTcpExtMPPrioRx | awk '{print $2}')
- [ -z "$count" ] && count=0
- if [ "$count" != "$mp_prio_nr_rx" ]; then
+ count=$(get_counter ${ns1} "MPTcpExtMPPrioRx")
+ if [ -z "$count" ]; then
+ echo "[skip]"
+ elif [ "$count" != "$mp_prio_nr_rx" ]; then
echo "[fail] got $count MP_PRIO[s] RX expected $mp_prio_nr_rx"
fail_test
else
@@ -1903,7 +1936,7 @@ wait_attempt_fail()
while [ $time -lt $timeout_ms ]; do
local cnt
- cnt=$(ip netns exec $ns nstat -as TcpAttemptFails | grep TcpAttemptFails | awk '{print $2}')
+ cnt=$(get_counter ${ns} "TcpAttemptFails")
[ "$cnt" = 1 ] && return 1
time=$((time + 100))
--
2.39.2On Mon, 2023-05-22 at 18:37 +0200, Matthieu Baerts wrote:
> Selftests are supposed to run on any kernels, including the old ones not
> supporting all MPTCP features.
>
> One of them is the MPTCP MIB counters introduced in commit fc518953bc9c
> ("mptcp: add and use MIB counter infrastructure") and more later. The
> MPTCP Join selftest heavily relies on these counters.
>
> If a counter is not supported by the kernel, it is not displayed when
> using 'nstat -z'. We can then detect that and skip the verification. A
> new helper (get_counter()) has been added to do the required checks and
> return an error if the counter is not available.
>
> Note that if we expect to have these features available and if
> SELFTESTS_MPTCP_LIB_EXPECT_ALL_FEATURES env var is set to 1, the tests
> will be marked as failed instead of skipped.
>
> Link: https://github.com/multipath-tcp/mptcp_net-next/issues/368
> Fixes: b08fbf241064 ("selftests: add test-cases for MPTCP MP_JOIN")
> Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
> ---
> tools/testing/selftests/net/mptcp/mptcp_join.sh | 251 ++++++++++++++----------
> 1 file changed, 142 insertions(+), 109 deletions(-)
>
> diff --git a/tools/testing/selftests/net/mptcp/mptcp_join.sh b/tools/testing/selftests/net/mptcp/mptcp_join.sh
> index 1a8f7c6fa988..73c513f1e808 100755
> --- a/tools/testing/selftests/net/mptcp/mptcp_join.sh
> +++ b/tools/testing/selftests/net/mptcp/mptcp_join.sh
> @@ -505,11 +505,25 @@ wait_local_port_listen()
> done
> }
>
> +# $1: ns ; $2: counter
> +get_counter()
> +{
> + local ns="${1}"
> + local counter="${2}"
> + local count
> +
> + count=$(ip netns exec ${ns} nstat -asz "${counter}" | awk 'NR==1 {next} {print $2}')
> + if [ -z "${count}" ]; then
> + mptcp_lib_fail_if_expected_feature "${counter} counter"
> + return 1
> + fi
> +
> + echo "${count}"
> +}
> +
> rm_addr_count()
> {
> - local ns=${1}
> -
> - ip netns exec ${ns} nstat -as | grep MPTcpExtRmAddr | awk '{print $2}'
> + get_counter "${1}" "MPTcpExtRmAddr"
> }
>
> # $1: ns, $2: old rm_addr counter in $ns
> @@ -532,11 +546,11 @@ wait_mpj()
> local ns="${1}"
> local cnt old_cnt
>
> - old_cnt=$(ip netns exec ${ns} nstat -as | grep MPJoinAckRx | awk '{print $2}')
> + old_cnt=$(get_counter ${ns} "MPTcpExtMPJoinAckRx")
>
> local i
> for i in $(seq 10); do
> - cnt=$(ip netns exec ${ns} nstat -as | grep MPJoinAckRx | awk '{print $2}')
> + cnt=$(get_counter ${ns} "MPTcpExtMPJoinAckRx")
> [ "$cnt" = "${old_cnt}" ] || break
> sleep 0.1
> done
> @@ -1185,12 +1199,13 @@ chk_csum_nr()
> fi
>
> printf "%-${nr_blank}s %s" " " "sum"
> - count=$(ip netns exec $ns1 nstat -as | grep MPTcpExtDataCsumErr | awk '{print $2}')
> - [ -z "$count" ] && count=0
> + count=$(get_counter ${ns1} "MPTcpExtDataCsumErr")
> if [ "$count" != "$csum_ns1" ]; then
> extra_msg="$extra_msg ns1=$count"
> fi
> - if { [ "$count" != $csum_ns1 ] && [ $allow_multi_errors_ns1 -eq 0 ]; } ||
> + if [ -z "$count" ]; then
> + echo -n "[skip]"
> + elif { [ "$count" != $csum_ns1 ] && [ $allow_multi_errors_ns1 -eq 0 ]; } ||
> { [ "$count" -lt $csum_ns1 ] && [ $allow_multi_errors_ns1 -eq 1 ]; }; then
> echo "[fail] got $count data checksum error[s] expected $csum_ns1"
> fail_test
> @@ -1198,12 +1213,13 @@ chk_csum_nr()
> echo -n "[ ok ]"
> fi
> echo -n " - csum "
> - count=$(ip netns exec $ns2 nstat -as | grep MPTcpExtDataCsumErr | awk '{print $2}')
> - [ -z "$count" ] && count=0
> + count=$(get_counter ${ns2} "MPTcpExtDataCsumErr")
> if [ "$count" != "$csum_ns2" ]; then
> extra_msg="$extra_msg ns2=$count"
> fi
> - if { [ "$count" != $csum_ns2 ] && [ $allow_multi_errors_ns2 -eq 0 ]; } ||
> + if [ -z "$count" ]; then
> + echo -n "[skip]"
> + elif { [ "$count" != $csum_ns2 ] && [ $allow_multi_errors_ns2 -eq 0 ]; } ||
> { [ "$count" -lt $csum_ns2 ] && [ $allow_multi_errors_ns2 -eq 1 ]; }; then
> echo "[fail] got $count data checksum error[s] expected $csum_ns2"
> fail_test
> @@ -1242,12 +1258,13 @@ chk_fail_nr()
> fi
>
> printf "%-${nr_blank}s %s" " " "ftx"
> - count=$(ip netns exec $ns_tx nstat -as | grep MPTcpExtMPFailTx | awk '{print $2}')
> - [ -z "$count" ] && count=0
> + count=$(get_counter ${ns_tx} "MPTcpExtMPFailTx")
> if [ "$count" != "$fail_tx" ]; then
> extra_msg="$extra_msg,tx=$count"
> fi
> - if { [ "$count" != "$fail_tx" ] && [ $allow_tx_lost -eq 0 ]; } ||
> + if [ -z "$count" ]; then
> + echo -n "[skip]"
> + elif { [ "$count" != "$fail_tx" ] && [ $allow_tx_lost -eq 0 ]; } ||
> { [ "$count" -gt "$fail_tx" ] && [ $allow_tx_lost -eq 1 ]; }; then
> echo "[fail] got $count MP_FAIL[s] TX expected $fail_tx"
> fail_test
> @@ -1256,12 +1273,13 @@ chk_fail_nr()
> fi
>
> echo -n " - failrx"
> - count=$(ip netns exec $ns_rx nstat -as | grep MPTcpExtMPFailRx | awk '{print $2}')
> - [ -z "$count" ] && count=0
> + count=$(get_counter ${ns_rx} "MPTcpExtMPFailRx")
> if [ "$count" != "$fail_rx" ]; then
> extra_msg="$extra_msg,rx=$count"
> fi
> - if { [ "$count" != "$fail_rx" ] && [ $allow_rx_lost -eq 0 ]; } ||
> + if [ -z "$count" ]; then
> + echo -n "[skip]"
> + elif { [ "$count" != "$fail_rx" ] && [ $allow_rx_lost -eq 0 ]; } ||
> { [ "$count" -gt "$fail_rx" ] && [ $allow_rx_lost -eq 1 ]; }; then
> echo "[fail] got $count MP_FAIL[s] RX expected $fail_rx"
> fail_test
> @@ -1289,10 +1307,11 @@ chk_fclose_nr()
> fi
>
> printf "%-${nr_blank}s %s" " " "ctx"
> - count=$(ip netns exec $ns_tx nstat -as | grep MPTcpExtMPFastcloseTx | awk '{print $2}')
> - [ -z "$count" ] && count=0
> - [ "$count" != "$fclose_tx" ] && extra_msg="$extra_msg,tx=$count"
> - if [ "$count" != "$fclose_tx" ]; then
> + count=$(get_counter ${ns_tx} "MPTcpExtMPFastcloseTx")
> + if [ -z "$count" ]; then
> + echo -n "[skip]"
> + elif [ "$count" != "$fclose_tx" ]; then
> + extra_msg="$extra_msg,tx=$count"
> echo "[fail] got $count MP_FASTCLOSE[s] TX expected $fclose_tx"
> fail_test
> else
> @@ -1300,10 +1319,11 @@ chk_fclose_nr()
> fi
>
> echo -n " - fclzrx"
> - count=$(ip netns exec $ns_rx nstat -as | grep MPTcpExtMPFastcloseRx | awk '{print $2}')
> - [ -z "$count" ] && count=0
> - [ "$count" != "$fclose_rx" ] && extra_msg="$extra_msg,rx=$count"
> - if [ "$count" != "$fclose_rx" ]; then
> + count=$(get_counter ${ns_rx} "MPTcpExtMPFastcloseRx")
> + if [ -z "$count" ]; then
> + echo -n "[skip]"
> + elif [ "$count" != "$fclose_rx" ]; then
> + extra_msg="$extra_msg,rx=$count"
> echo "[fail] got $count MP_FASTCLOSE[s] RX expected $fclose_rx"
> fail_test
> else
> @@ -1330,9 +1350,10 @@ chk_rst_nr()
> fi
>
> printf "%-${nr_blank}s %s" " " "rtx"
> - count=$(ip netns exec $ns_tx nstat -as | grep MPTcpExtMPRstTx | awk '{print $2}')
> - [ -z "$count" ] && count=0
> - if [ $count -lt $rst_tx ]; then
> + count=$(get_counter ${ns_tx} "MPTcpExtMPRstTx")
> + if [ -z "$count" ]; then
> + echo -n "[skip]"
> + elif [ $count -lt $rst_tx ]; then
> echo "[fail] got $count MP_RST[s] TX expected $rst_tx"
> fail_test
> else
> @@ -1340,9 +1361,10 @@ chk_rst_nr()
> fi
>
> echo -n " - rstrx "
> - count=$(ip netns exec $ns_rx nstat -as | grep MPTcpExtMPRstRx | awk '{print $2}')
> - [ -z "$count" ] && count=0
> - if [ "$count" -lt "$rst_rx" ]; then
> + count=$(get_counter ${ns_rx} "MPTcpExtMPRstRx")
> + if [ -z "$count" ]; then
> + echo -n "[skip]"
> + elif [ "$count" -lt "$rst_rx" ]; then
> echo "[fail] got $count MP_RST[s] RX expected $rst_rx"
> fail_test
> else
> @@ -1359,9 +1381,10 @@ chk_infi_nr()
> local count
>
> printf "%-${nr_blank}s %s" " " "itx"
> - count=$(ip netns exec $ns2 nstat -as | grep InfiniteMapTx | awk '{print $2}')
> - [ -z "$count" ] && count=0
> - if [ "$count" != "$infi_tx" ]; then
> + count=$(get_counter ${ns2} "MPTcpExtInfiniteMapTx")
> + if [ -z "$count" ]; then
> + echo -n "[skip]"
> + elif [ "$count" != "$infi_tx" ]; then
> echo "[fail] got $count infinite map[s] TX expected $infi_tx"
> fail_test
> else
> @@ -1369,9 +1392,10 @@ chk_infi_nr()
> fi
>
> echo -n " - infirx"
> - count=$(ip netns exec $ns1 nstat -as | grep InfiniteMapRx | awk '{print $2}')
> - [ -z "$count" ] && count=0
> - if [ "$count" != "$infi_rx" ]; then
> + count=$(get_counter ${ns1} "MPTcpExtInfiniteMapRx")
> + if [ -z "$count" ]; then
> + echo "[skip]"
> + elif [ "$count" != "$infi_rx" ]; then
> echo "[fail] got $count infinite map[s] RX expected $infi_rx"
> fail_test
> else
> @@ -1399,9 +1423,10 @@ chk_join_nr()
> fi
>
> printf "%03u %-36s %s" "${TEST_COUNT}" "${title}" "syn"
> - count=$(ip netns exec $ns1 nstat -as | grep MPTcpExtMPJoinSynRx | awk '{print $2}')
> - [ -z "$count" ] && count=0
> - if [ "$count" != "$syn_nr" ]; then
> + count=$(get_counter ${ns1} "MPTcpExtMPJoinSynRx")
> + if [ -z "$count" ]; then
> + echo -n "[skip]"
> + elif [ "$count" != "$syn_nr" ]; then
> echo "[fail] got $count JOIN[s] syn expected $syn_nr"
> fail_test
> else
> @@ -1410,9 +1435,10 @@ chk_join_nr()
>
> echo -n " - synack"
> with_cookie=$(ip netns exec $ns2 sysctl -n net.ipv4.tcp_syncookies)
> - count=$(ip netns exec $ns2 nstat -as | grep MPTcpExtMPJoinSynAckRx | awk '{print $2}')
> - [ -z "$count" ] && count=0
> - if [ "$count" != "$syn_ack_nr" ]; then
> + count=$(get_counter ${ns2} "MPTcpExtMPJoinSynAckRx")
> + if [ -z "$count" ]; then
> + echo -n "[skip]"
> + elif [ "$count" != "$syn_ack_nr" ]; then
> # simult connections exceeding the limit with cookie enabled could go up to
> # synack validation as the conn limit can be enforced reliably only after
> # the subflow creation
> @@ -1427,9 +1453,10 @@ chk_join_nr()
> fi
>
> echo -n " - ack"
> - count=$(ip netns exec $ns1 nstat -as | grep MPTcpExtMPJoinAckRx | awk '{print $2}')
> - [ -z "$count" ] && count=0
> - if [ "$count" != "$ack_nr" ]; then
> + count=$(get_counter ${ns1} "MPTcpExtMPJoinAckRx")
> + if [ -z "$count" ]; then
> + echo "[skip]"
> + elif [ "$count" != "$ack_nr" ]; then
> echo "[fail] got $count JOIN[s] ack expected $ack_nr"
> fail_test
> else
> @@ -1459,12 +1486,12 @@ chk_stale_nr()
> local recover_nr
>
> printf "%-${nr_blank}s %-18s" " " "stale"
> - stale_nr=$(ip netns exec $ns nstat -as | grep MPTcpExtSubflowStale | awk '{print $2}')
> - [ -z "$stale_nr" ] && stale_nr=0
> - recover_nr=$(ip netns exec $ns nstat -as | grep MPTcpExtSubflowRecover | awk '{print $2}')
> - [ -z "$recover_nr" ] && recover_nr=0
>
> - if [ $stale_nr -lt $stale_min ] ||
> + stale_nr=$(get_counter ${ns} "MPTcpExtSubflowStale")
> + recover_nr=$(get_counter ${ns} "MPTcpExtSubflowRecover")
> + if [ -z "$stale_nr" ] || [ -z "$recover_nr" ]; then
> + echo "[skip]"
> + elif [ $stale_nr -lt $stale_min ] ||
> { [ $stale_max -gt 0 ] && [ $stale_nr -gt $stale_max ]; } ||
> [ $((stale_nr - recover_nr)) -ne $stale_delta ]; then
> echo "[fail] got $stale_nr stale[s] $recover_nr recover[s], " \
> @@ -1499,12 +1526,12 @@ chk_add_nr()
> timeout=$(ip netns exec $ns1 sysctl -n net.mptcp.add_addr_timeout)
>
> printf "%-${nr_blank}s %s" " " "add"
> - count=$(ip netns exec $ns2 nstat -as MPTcpExtAddAddr | grep MPTcpExtAddAddr | awk '{print $2}')
> - [ -z "$count" ] && count=0
> -
> + count=$(get_counter ${ns2} "MPTcpExtAddAddr")
> + if [ -z "$count" ]; then
> + echo -n "[skip]"
> # if the test configured a short timeout tolerate greater then expected
> # add addrs options, due to retransmissions
> - if [ "$count" != "$add_nr" ] && { [ "$timeout" -gt 1 ] || [ "$count" -lt "$add_nr" ]; }; then
> + elif [ "$count" != "$add_nr" ] && { [ "$timeout" -gt 1 ] || [ "$count" -lt "$add_nr" ]; }; then
> echo "[fail] got $count ADD_ADDR[s] expected $add_nr"
> fail_test
> else
> @@ -1512,9 +1539,10 @@ chk_add_nr()
> fi
>
> echo -n " - echo "
> - count=$(ip netns exec $ns1 nstat -as MPTcpExtEchoAdd | grep MPTcpExtEchoAdd | awk '{print $2}')
> - [ -z "$count" ] && count=0
> - if [ "$count" != "$echo_nr" ]; then
> + count=$(get_counter ${ns1} "MPTcpExtEchoAdd")
> + if [ -z "$count" ]; then
> + echo -n "[skip]"
> + elif [ "$count" != "$echo_nr" ]; then
> echo "[fail] got $count ADD_ADDR echo[s] expected $echo_nr"
> fail_test
> else
> @@ -1523,9 +1551,10 @@ chk_add_nr()
>
> if [ $port_nr -gt 0 ]; then
> echo -n " - pt "
> - count=$(ip netns exec $ns2 nstat -as | grep MPTcpExtPortAdd | awk '{print $2}')
> - [ -z "$count" ] && count=0
> - if [ "$count" != "$port_nr" ]; then
> + count=$(get_counter ${ns2} "MPTcpExtPortAdd")
> + if [ -z "$count" ]; then
> + echo "[skip]"
> + elif [ "$count" != "$port_nr" ]; then
> echo "[fail] got $count ADD_ADDR[s] with a port-number expected $port_nr"
> fail_test
> else
> @@ -1533,10 +1562,10 @@ chk_add_nr()
> fi
>
> printf "%-${nr_blank}s %s" " " "syn"
> - count=$(ip netns exec $ns1 nstat -as | grep MPTcpExtMPJoinPortSynRx |
> - awk '{print $2}')
> - [ -z "$count" ] && count=0
> - if [ "$count" != "$syn_nr" ]; then
> + count=$(get_counter ${ns1} "MPTcpExtMPJoinPortSynRx")
> + if [ -z "$count" ]; then
> + echo -n "[skip]"
> + elif [ "$count" != "$syn_nr" ]; then
> echo "[fail] got $count JOIN[s] syn with a different \
> port-number expected $syn_nr"
> fail_test
> @@ -1545,10 +1574,10 @@ chk_add_nr()
> fi
>
> echo -n " - synack"
> - count=$(ip netns exec $ns2 nstat -as | grep MPTcpExtMPJoinPortSynAckRx |
> - awk '{print $2}')
> - [ -z "$count" ] && count=0
> - if [ "$count" != "$syn_ack_nr" ]; then
> + count=$(get_counter ${ns2} "MPTcpExtMPJoinPortSynAckRx")
> + if [ -z "$count" ]; then
> + echo -n "[skip]"
> + elif [ "$count" != "$syn_ack_nr" ]; then
> echo "[fail] got $count JOIN[s] synack with a different \
> port-number expected $syn_ack_nr"
> fail_test
> @@ -1557,10 +1586,10 @@ chk_add_nr()
> fi
>
> echo -n " - ack"
> - count=$(ip netns exec $ns1 nstat -as | grep MPTcpExtMPJoinPortAckRx |
> - awk '{print $2}')
> - [ -z "$count" ] && count=0
> - if [ "$count" != "$ack_nr" ]; then
> + count=$(get_counter ${ns1} "MPTcpExtMPJoinPortAckRx")
> + if [ -z "$count" ]; then
> + echo "[skip]"
> + elif [ "$count" != "$ack_nr" ]; then
> echo "[fail] got $count JOIN[s] ack with a different \
> port-number expected $ack_nr"
> fail_test
> @@ -1569,10 +1598,10 @@ chk_add_nr()
> fi
>
> printf "%-${nr_blank}s %s" " " "syn"
> - count=$(ip netns exec $ns1 nstat -as | grep MPTcpExtMismatchPortSynRx |
> - awk '{print $2}')
> - [ -z "$count" ] && count=0
> - if [ "$count" != "$mis_syn_nr" ]; then
> + count=$(get_counter ${ns1} "MPTcpExtMismatchPortSynRx")
> + if [ -z "$count" ]; then
> + echo -n "[skip]"
> + elif [ "$count" != "$mis_syn_nr" ]; then
> echo "[fail] got $count JOIN[s] syn with a mismatched \
> port-number expected $mis_syn_nr"
> fail_test
> @@ -1581,10 +1610,10 @@ chk_add_nr()
> fi
>
> echo -n " - ack "
> - count=$(ip netns exec $ns1 nstat -as | grep MPTcpExtMismatchPortAckRx |
> - awk '{print $2}')
> - [ -z "$count" ] && count=0
> - if [ "$count" != "$mis_ack_nr" ]; then
> + count=$(get_counter ${ns1} "MPTcpExtMismatchPortAckRx")
> + if [ -z "$count" ]; then
> + echo "[skip]"
> + elif [ "$count" != "$mis_ack_nr" ]; then
> echo "[fail] got $count JOIN[s] ack with a mismatched \
> port-number expected $mis_ack_nr"
> fail_test
> @@ -1606,12 +1635,12 @@ chk_add_tx_nr()
> timeout=$(ip netns exec $ns1 sysctl -n net.mptcp.add_addr_timeout)
>
> printf "%-${nr_blank}s %s" " " "add TX"
> - count=$(ip netns exec $ns1 nstat -as MPTcpExtAddAddrTx | grep MPTcpExtAddAddrTx | awk '{print $2}')
> - [ -z "$count" ] && count=0
> -
> + count=$(get_counter ${ns1} "MPTcpExtAddAddrTx")
> + if [ -z "$count" ]; then
> + echo -n "[skip]"
> # if the test configured a short timeout tolerate greater then expected
> # add addrs options, due to retransmissions
> - if [ "$count" != "$add_tx_nr" ] && { [ "$timeout" -gt 1 ] || [ "$count" -lt "$add_tx_nr" ]; }; then
> + elif [ "$count" != "$add_tx_nr" ] && { [ "$timeout" -gt 1 ] || [ "$count" -lt "$add_tx_nr" ]; }; then
> echo "[fail] got $count ADD_ADDR[s] TX, expected $add_tx_nr"
> fail_test
> else
> @@ -1619,9 +1648,10 @@ chk_add_tx_nr()
> fi
>
> echo -n " - echo TX "
> - count=$(ip netns exec $ns2 nstat -as MPTcpExtEchoAddTx | grep MPTcpExtEchoAddTx | awk '{print $2}')
> - [ -z "$count" ] && count=0
> - if [ "$count" != "$echo_tx_nr" ]; then
> + count=$(get_counter ${ns2} "MPTcpExtEchoAddTx")
> + if [ -z "$count" ]; then
> + echo "[skip]"
> + elif [ "$count" != "$echo_tx_nr" ]; then
> echo "[fail] got $count ADD_ADDR echo[s] TX, expected $echo_tx_nr"
> fail_test
> else
> @@ -1695,9 +1725,10 @@ chk_rm_nr()
> fi
>
> printf "%-${nr_blank}s %s" " " "rm "
> - count=$(ip netns exec $addr_ns nstat -as MPTcpExtRmAddr | grep MPTcpExtRmAddr | awk '{print $2}')
> - [ -z "$count" ] && count=0
> - if [ "$count" != "$rm_addr_nr" ]; then
> + count=$(get_counter ${addr_ns} "MPTcpExtRmAddr")
> + if [ -z "$count" ]; then
> + echo -n "[skip]"
> + elif [ "$count" != "$rm_addr_nr" ]; then
> echo "[fail] got $count RM_ADDR[s] expected $rm_addr_nr"
> fail_test
> else
> @@ -1705,12 +1736,13 @@ chk_rm_nr()
> fi
>
> echo -n " - rmsf "
> - count=$(ip netns exec $subflow_ns nstat -as | grep MPTcpExtRmSubflow | awk '{print $2}')
> - [ -z "$count" ] && count=0
> - if [ -n "$simult" ]; then
> + count=$(get_counter ${subflow_ns} "MPTcpExtRmSubflow")
> + if [ -z "$count" ]; then
> + echo -n "[skip]"
> + elif [ -n "$simult" ]; then
> local cnt suffix
>
> - cnt=$(ip netns exec $addr_ns nstat -as | grep MPTcpExtRmSubflow | awk '{print $2}')
> + cnt=$(get_counter ${addr_ns} "MPTcpExtRmSubflow")
>
> # in case of simult flush, the subflow removal count on each side is
> # unreliable
> @@ -1719,14 +1751,12 @@ chk_rm_nr()
> [ "$count" != "$rm_subflow_nr" ] && suffix="$count in [$rm_subflow_nr:$((rm_subflow_nr*2))]"
> if [ $count -ge "$rm_subflow_nr" ] && \
> [ "$count" -le "$((rm_subflow_nr *2 ))" ]; then
> - echo "[ ok ] $suffix"
> + echo -n "[ ok ] $suffix"
> else
> echo "[fail] got $count RM_SUBFLOW[s] expected in range [$rm_subflow_nr:$((rm_subflow_nr*2))]"
> fail_test
> fi
> - return
> - fi
> - if [ "$count" != "$rm_subflow_nr" ]; then
> + elif [ "$count" != "$rm_subflow_nr" ]; then
> echo "[fail] got $count RM_SUBFLOW[s] expected $rm_subflow_nr"
> fail_test
> else
> @@ -1741,9 +1771,10 @@ chk_rm_tx_nr()
> local rm_addr_tx_nr=$1
>
> printf "%-${nr_blank}s %s" " " "rm TX "
> - count=$(ip netns exec $ns2 nstat -as MPTcpExtRmAddrTx | grep MPTcpExtRmAddrTx | awk '{print $2}')
> - [ -z "$count" ] && count=0
> - if [ "$count" != "$rm_addr_tx_nr" ]; then
> + count=$(get_counter ${ns2} "MPTcpExtRmAddrTx")
> + if [ -z "$count" ]; then
> + echo -n "[skip]"
> + elif [ "$count" != "$rm_addr_tx_nr" ]; then
> echo "[fail] got $count RM_ADDR[s] expected $rm_addr_tx_nr"
> fail_test
> else
> @@ -1780,9 +1811,10 @@ chk_prio_nr()
> local count
>
> printf "%-${nr_blank}s %s" " " "ptx"
> - count=$(ip netns exec $ns1 nstat -as | grep MPTcpExtMPPrioTx | awk '{print $2}')
> - [ -z "$count" ] && count=0
> - if [ "$count" != "$mp_prio_nr_tx" ]; then
> + count=$(get_counter ${ns1} "MPTcpExtMPPrioTx")
> + if [ -z "$count" ]; then
> + echo -n "[skip]"
> + elif [ "$count" != "$mp_prio_nr_tx" ]; then
> echo "[fail] got $count MP_PRIO[s] TX expected $mp_prio_nr_tx"
> fail_test
> else
> @@ -1790,9 +1822,10 @@ chk_prio_nr()
> fi
>
> echo -n " - prx "
> - count=$(ip netns exec $ns1 nstat -as | grep MPTcpExtMPPrioRx | awk '{print $2}')
> - [ -z "$count" ] && count=0
> - if [ "$count" != "$mp_prio_nr_rx" ]; then
> + count=$(get_counter ${ns1} "MPTcpExtMPPrioRx")
> + if [ -z "$count" ]; then
> + echo "[skip]"
> + elif [ "$count" != "$mp_prio_nr_rx" ]; then
> echo "[fail] got $count MP_PRIO[s] RX expected $mp_prio_nr_rx"
> fail_test
> else
> @@ -1903,7 +1936,7 @@ wait_attempt_fail()
> while [ $time -lt $timeout_ms ]; do
> local cnt
>
> - cnt=$(ip netns exec $ns nstat -as TcpAttemptFails | grep TcpAttemptFails | awk '{print $2}')
> + cnt=$(get_counter ${ns} "TcpAttemptFails")
>
> [ "$cnt" = 1 ] && return 1
> time=$((time + 100))
>
This looks quite invasive. I would instead skip the whole mp_join tests
if any of the basic counters are not available - to there will be a
single hook/check.
/P
Hi Paolo,
On 22/05/2023 19:39, Paolo Abeni wrote:
> On Mon, 2023-05-22 at 18:37 +0200, Matthieu Baerts wrote:
>> Selftests are supposed to run on any kernels, including the old ones not
>> supporting all MPTCP features.
>>
>> One of them is the MPTCP MIB counters introduced in commit fc518953bc9c
>> ("mptcp: add and use MIB counter infrastructure") and more later. The
>> MPTCP Join selftest heavily relies on these counters.
>>
>> If a counter is not supported by the kernel, it is not displayed when
>> using 'nstat -z'. We can then detect that and skip the verification. A
>> new helper (get_counter()) has been added to do the required checks and
>> return an error if the counter is not available.
>>
>> Note that if we expect to have these features available and if
>> SELFTESTS_MPTCP_LIB_EXPECT_ALL_FEATURES env var is set to 1, the tests
>> will be marked as failed instead of skipped.
>>
>> Link: https://github.com/multipath-tcp/mptcp_net-next/issues/368
>> Fixes: b08fbf241064 ("selftests: add test-cases for MPTCP MP_JOIN")
>> Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
>> ---
>> tools/testing/selftests/net/mptcp/mptcp_join.sh | 251 ++++++++++++++----------
>> 1 file changed, 142 insertions(+), 109 deletions(-)
>>
>> diff --git a/tools/testing/selftests/net/mptcp/mptcp_join.sh b/tools/testing/selftests/net/mptcp/mptcp_join.sh
>> index 1a8f7c6fa988..73c513f1e808 100755
>> --- a/tools/testing/selftests/net/mptcp/mptcp_join.sh
>> +++ b/tools/testing/selftests/net/mptcp/mptcp_join.sh
>> @@ -505,11 +505,25 @@ wait_local_port_listen()
>> done
>> }
>>
>> +# $1: ns ; $2: counter
>> +get_counter()
>> +{
>> + local ns="${1}"
>> + local counter="${2}"
>> + local count
>> +
>> + count=$(ip netns exec ${ns} nstat -asz "${counter}" | awk 'NR==1 {next} {print $2}')
>> + if [ -z "${count}" ]; then
>> + mptcp_lib_fail_if_expected_feature "${counter} counter"
>> + return 1
>> + fi
>> +
>> + echo "${count}"
>> +}
(...)
> This looks quite invasive. I would instead skip the whole mp_join tests
> if any of the basic counters are not available - to there will be a
> single hook/check.
I agree that it is quite invasive but the idea is to backport it to
stable. Once this is done, it should not cause troubles to do other
backports.
Also, this new helper does a few things:
- It makes sure we get one counter to avoid issues we had in the past
where some counters were sharing the same prefix, e.g. MPTcpExtRmAddr
and MPTcpExtRmAddrDrop
- When a MIB counter is missing, the checks using it are skipped
- Our CI will catch typos
- (getting MIB counters is now uniformed)
Initially I used the helpers for counters that are more recent and for
the ones sharing the same prefixes but that was creating quite a lot of
commits and I was thinking it might be better to uniform them.
It should not be too hard to backports: we don't really change this part
so if there is are conflicts, it is very likely because a counter is not
used somewhere so we don't need that chunk.
Cheers,
Matt
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