[PATCH mptcp-next v3 00/12] Refactor mptcp_join.sh

[PATCH mptcp-next v3 00/12] Refactor mptcp_join.sh

[Matthieu Baerts]

It is very similar to the v2 but rebased and with 3 new patches.

The new patches:

- patch 1/12: 'ip mptcp' wrappers were missing in a patch which is in
  the export branch for a bit of time now. While at it, a new helper has
  been added to avoid long 'ip netns exec' commands as suggested by
  Paolo.

- patch 3/12: just to move an helper with the other ones

- patch 12/12: add new helpers to avoid long 'ip netns exec' commands,
  also suggested by Paolo.

The rest is less interesting. There are some modification in patches
6-8/12 because there are new tests in our tree: it was needed to modify
more code around the new usage of 'reset' and 'ret=1' but nothing
complex there.

In patch 6/12, I removed a new long comment that is probably not needed:
with the indentation, it looked even harder to read. If we need the
comment, probably best to create a dedicated function, use variables
with a clear name or use words instead of just a series of numbers.

Also in patch 13/14, there was a new shellcheck issue ("Useless cat.":
@Paolo: did you introduce this ShellCheck rule???).

Matthieu Baerts (12):
  Squash to "selftests: mptcp: Add tests for userspace PM type"
  Squash to "selftests: mptcp: join: allow running -cCi"
  Squash to "selftests: mptcp: add implicit endpoint test case"
  selftests: mptcp: join: define tests groups once
  selftests: mptcp: join: reset failing links
  selftests: mptcp: join: option to execute specific tests
  selftests: mptcp: join: alt. to exec specific tests
  selftests: mptcp: join: list failure at the end
  selftests: mptcp: join: clarify local/global vars
  selftests: mptcp: join: avoid backquotes
  selftests: mptcp: join: make it shellcheck compliant
  selftests: mptcp: join: helper to filter TCP

 .../testing/selftests/net/mptcp/mptcp_join.sh | 2435 +++++++++--------
 1 file changed, 1297 insertions(+), 1138 deletions(-)

-- 
2.34.1

[PATCH mptcp-next v3 01/12] Squash to "selftests: mptcp: Add tests for userspace PM type"

[Matthieu Baerts]

Commit 34aa6e3bccd8 ("selftests: mptcp: add ip mptcp wrappers") has been
applied in net-next before this other patch.

It is then needed to do the same modifications in the userspace tests as
well.

While at it, a new helper has been added to avoid long 'ip netns exec'
commands as suggested by Paolo.

Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
---

Notes:
    to be squashed in "selftests: mptcp: Add tests for userspace PM type"

 .../testing/selftests/net/mptcp/mptcp_join.sh | 57 +++++++++++--------
 1 file changed, 32 insertions(+), 25 deletions(-)

diff --git a/tools/testing/selftests/net/mptcp/mptcp_join.sh b/tools/testing/selftests/net/mptcp/mptcp_join.sh
index ef57a28cf722..e2d56a5bcaf4 100755
--- a/tools/testing/selftests/net/mptcp/mptcp_join.sh
+++ b/tools/testing/selftests/net/mptcp/mptcp_join.sh
@@ -1448,6 +1448,13 @@ wait_attempt_fail()
 	return 1
 }
 
+set_userspace_pm()
+{
+	local ns=$1
+
+	ip netns exec $ns sysctl -q net.mptcp.pm_type=1
+}
+
 subflows_tests()
 {
 	reset
@@ -2468,59 +2475,59 @@ userspace_tests()
 {
 	# userspace pm type prevents add_addr
 	reset
-	ip netns exec $ns1 sysctl -q net.mptcp.pm_type=1
-	ip netns exec $ns1 ./pm_nl_ctl limits 0 2
-	ip netns exec $ns2 ./pm_nl_ctl limits 0 2
-	ip netns exec $ns1 ./pm_nl_ctl add 10.0.2.1 flags signal
+	set_userspace_pm $ns1
+	pm_nl_set_limits $ns1 0 2
+	pm_nl_set_limits $ns2 0 2
+	pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
 	run_tests $ns1 $ns2 10.0.1.1
 	chk_join_nr "userspace pm type prevents add_addr" 0 0 0
 	chk_add_nr 0 0
 
 	# userspace pm type echoes add_addr
 	reset
-	ip netns exec $ns2 sysctl -q net.mptcp.pm_type=1
-	ip netns exec $ns1 ./pm_nl_ctl limits 0 2
-	ip netns exec $ns2 ./pm_nl_ctl limits 0 2
-	ip netns exec $ns1 ./pm_nl_ctl add 10.0.2.1 flags signal
+	set_userspace_pm $ns2
+	pm_nl_set_limits $ns1 0 2
+	pm_nl_set_limits $ns2 0 2
+	pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
 	run_tests $ns1 $ns2 10.0.1.1
 	chk_join_nr "userspace pm type echoes add_addr" 0 0 0
 	chk_add_nr 1 1
 
 	# userspace pm type rejects join
 	reset
-	ip netns exec $ns1 sysctl -q net.mptcp.pm_type=1
-	ip netns exec $ns1 ./pm_nl_ctl limits 1 1
-	ip netns exec $ns2 ./pm_nl_ctl limits 1 1
-	ip netns exec $ns2 ./pm_nl_ctl add 10.0.3.2 flags subflow
+	set_userspace_pm $ns1
+	pm_nl_set_limits $ns1 1 1
+	pm_nl_set_limits $ns2 1 1
+	pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
 	run_tests $ns1 $ns2 10.0.1.1
 	chk_join_nr "userspace pm type rejects join" 1 1 0
 
 	# userspace pm type does not send join
 	reset
-	ip netns exec $ns2 sysctl -q net.mptcp.pm_type=1
-	ip netns exec $ns1 ./pm_nl_ctl limits 1 1
-	ip netns exec $ns2 ./pm_nl_ctl limits 1 1
-	ip netns exec $ns2 ./pm_nl_ctl add 10.0.3.2 flags subflow
+	set_userspace_pm $ns2
+	pm_nl_set_limits $ns1 1 1
+	pm_nl_set_limits $ns2 1 1
+	pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
 	run_tests $ns1 $ns2 10.0.1.1
 	chk_join_nr "userspace pm type does not send join" 0 0 0
 
 	# userspace pm type prevents mp_prio
 	reset
-	ip netns exec $ns1 sysctl -q net.mptcp.pm_type=1
-	ip netns exec $ns1 ./pm_nl_ctl limits 1 1
-	ip netns exec $ns2 ./pm_nl_ctl limits 1 1
-	ip netns exec $ns2 ./pm_nl_ctl add 10.0.3.2 flags subflow
+	set_userspace_pm $ns1
+	pm_nl_set_limits $ns1 1 1
+	pm_nl_set_limits $ns2 1 1
+	pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
 	run_tests $ns1 $ns2 10.0.1.1 0 0 0 slow backup
 	chk_join_nr "userspace pm type prevents mp_prio" 1 1 0
 	chk_prio_nr 0 0
 
 	# userspace pm type prevents rm_addr
 	reset
-	ip netns exec $ns1 sysctl -q net.mptcp.pm_type=1
-	ip netns exec $ns2 sysctl -q net.mptcp.pm_type=1
-	ip netns exec $ns1 ./pm_nl_ctl limits 0 1
-	ip netns exec $ns2 ./pm_nl_ctl limits 0 1
-	ip netns exec $ns2 ./pm_nl_ctl add 10.0.3.2 flags subflow
+	set_userspace_pm $ns1
+	set_userspace_pm $ns2
+	pm_nl_set_limits $ns1 0 1
+	pm_nl_set_limits $ns2 0 1
+	pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
 	run_tests $ns1 $ns2 10.0.1.1 0 0 -1 slow
 	chk_join_nr "userspace pm type prevents rm_addr" 0 0 0
 	chk_rm_nr 0 0
-- 
2.34.1

Re: [PATCH mptcp-next v3 01/12] Squash to "selftests: mptcp: Add tests for userspace PM type"

[Geliang Tang]

Matthieu Baerts <matthieu.baerts@tessares.net> 于2022年2月24日周四 21:56写道：
>
> Commit 34aa6e3bccd8 ("selftests: mptcp: add ip mptcp wrappers") has been
> applied in net-next before this other patch.
>
> It is then needed to do the same modifications in the userspace tests as
> well.
>
> While at it, a new helper has been added to avoid long 'ip netns exec'
> commands as suggested by Paolo.
>
> Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>

Acked-by: Geliang Tang <geliang.tang@suse.com>

> ---
>
> Notes:
>     to be squashed in "selftests: mptcp: Add tests for userspace PM type"
>
>  .../testing/selftests/net/mptcp/mptcp_join.sh | 57 +++++++++++--------
>  1 file changed, 32 insertions(+), 25 deletions(-)
>
> diff --git a/tools/testing/selftests/net/mptcp/mptcp_join.sh b/tools/testing/selftests/net/mptcp/mptcp_join.sh
> index ef57a28cf722..e2d56a5bcaf4 100755
> --- a/tools/testing/selftests/net/mptcp/mptcp_join.sh
> +++ b/tools/testing/selftests/net/mptcp/mptcp_join.sh
> @@ -1448,6 +1448,13 @@ wait_attempt_fail()
>         return 1
>  }
>
> +set_userspace_pm()
> +{
> +       local ns=$1
> +
> +       ip netns exec $ns sysctl -q net.mptcp.pm_type=1
> +}
> +
>  subflows_tests()
>  {
>         reset
> @@ -2468,59 +2475,59 @@ userspace_tests()
>  {
>         # userspace pm type prevents add_addr
>         reset
> -       ip netns exec $ns1 sysctl -q net.mptcp.pm_type=1
> -       ip netns exec $ns1 ./pm_nl_ctl limits 0 2
> -       ip netns exec $ns2 ./pm_nl_ctl limits 0 2
> -       ip netns exec $ns1 ./pm_nl_ctl add 10.0.2.1 flags signal
> +       set_userspace_pm $ns1
> +       pm_nl_set_limits $ns1 0 2
> +       pm_nl_set_limits $ns2 0 2
> +       pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
>         run_tests $ns1 $ns2 10.0.1.1
>         chk_join_nr "userspace pm type prevents add_addr" 0 0 0
>         chk_add_nr 0 0
>
>         # userspace pm type echoes add_addr
>         reset
> -       ip netns exec $ns2 sysctl -q net.mptcp.pm_type=1
> -       ip netns exec $ns1 ./pm_nl_ctl limits 0 2
> -       ip netns exec $ns2 ./pm_nl_ctl limits 0 2
> -       ip netns exec $ns1 ./pm_nl_ctl add 10.0.2.1 flags signal
> +       set_userspace_pm $ns2
> +       pm_nl_set_limits $ns1 0 2
> +       pm_nl_set_limits $ns2 0 2
> +       pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
>         run_tests $ns1 $ns2 10.0.1.1
>         chk_join_nr "userspace pm type echoes add_addr" 0 0 0
>         chk_add_nr 1 1
>
>         # userspace pm type rejects join
>         reset
> -       ip netns exec $ns1 sysctl -q net.mptcp.pm_type=1
> -       ip netns exec $ns1 ./pm_nl_ctl limits 1 1
> -       ip netns exec $ns2 ./pm_nl_ctl limits 1 1
> -       ip netns exec $ns2 ./pm_nl_ctl add 10.0.3.2 flags subflow
> +       set_userspace_pm $ns1
> +       pm_nl_set_limits $ns1 1 1
> +       pm_nl_set_limits $ns2 1 1
> +       pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
>         run_tests $ns1 $ns2 10.0.1.1
>         chk_join_nr "userspace pm type rejects join" 1 1 0
>
>         # userspace pm type does not send join
>         reset
> -       ip netns exec $ns2 sysctl -q net.mptcp.pm_type=1
> -       ip netns exec $ns1 ./pm_nl_ctl limits 1 1
> -       ip netns exec $ns2 ./pm_nl_ctl limits 1 1
> -       ip netns exec $ns2 ./pm_nl_ctl add 10.0.3.2 flags subflow
> +       set_userspace_pm $ns2
> +       pm_nl_set_limits $ns1 1 1
> +       pm_nl_set_limits $ns2 1 1
> +       pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
>         run_tests $ns1 $ns2 10.0.1.1
>         chk_join_nr "userspace pm type does not send join" 0 0 0
>
>         # userspace pm type prevents mp_prio
>         reset
> -       ip netns exec $ns1 sysctl -q net.mptcp.pm_type=1
> -       ip netns exec $ns1 ./pm_nl_ctl limits 1 1
> -       ip netns exec $ns2 ./pm_nl_ctl limits 1 1
> -       ip netns exec $ns2 ./pm_nl_ctl add 10.0.3.2 flags subflow
> +       set_userspace_pm $ns1
> +       pm_nl_set_limits $ns1 1 1
> +       pm_nl_set_limits $ns2 1 1
> +       pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
>         run_tests $ns1 $ns2 10.0.1.1 0 0 0 slow backup
>         chk_join_nr "userspace pm type prevents mp_prio" 1 1 0
>         chk_prio_nr 0 0
>
>         # userspace pm type prevents rm_addr
>         reset
> -       ip netns exec $ns1 sysctl -q net.mptcp.pm_type=1
> -       ip netns exec $ns2 sysctl -q net.mptcp.pm_type=1
> -       ip netns exec $ns1 ./pm_nl_ctl limits 0 1
> -       ip netns exec $ns2 ./pm_nl_ctl limits 0 1
> -       ip netns exec $ns2 ./pm_nl_ctl add 10.0.3.2 flags subflow
> +       set_userspace_pm $ns1
> +       set_userspace_pm $ns2
> +       pm_nl_set_limits $ns1 0 1
> +       pm_nl_set_limits $ns2 0 1
> +       pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
>         run_tests $ns1 $ns2 10.0.1.1 0 0 -1 slow
>         chk_join_nr "userspace pm type prevents rm_addr" 0 0 0
>         chk_rm_nr 0 0
> --
> 2.34.1
>
>

[PATCH mptcp-next v3 02/12] Squash to "selftests: mptcp: join: allow running -cCi"

[Matthieu Baerts]

The recommended way with getopt is first parse all options and then act.

This allows to do some actions in priority, e.g. display the help menu
and stop.

But also some global variables changing the behaviour of this selftests
-- like the ones behind -cCi options -- can be set before running the
different tests. By doing that, we can also avoid long and unreadable
regex.

This can be squashed in "selftests: mptcp: join: allow running -cCi" and
the commit message can be appended with what is above.

Reviewed-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
---

Notes:
    to be squashed in "selftests: mptcp: join: allow running -cCi"

 .../testing/selftests/net/mptcp/mptcp_join.sh | 73 ++++++++-----------
 1 file changed, 31 insertions(+), 42 deletions(-)

diff --git a/tools/testing/selftests/net/mptcp/mptcp_join.sh b/tools/testing/selftests/net/mptcp/mptcp_join.sh
index e2d56a5bcaf4..02ae2692f7fc 100755
--- a/tools/testing/selftests/net/mptcp/mptcp_join.sh
+++ b/tools/testing/selftests/net/mptcp/mptcp_join.sh
@@ -17,7 +17,6 @@ checksum=0
 ip_mptcp=0
 check_invert=0
 validate_checksum=0
-do_all_tests=1
 init=0
 
 TEST_COUNT=0
@@ -2630,93 +2629,75 @@ usage()
 	exit ${ret}
 }
 
-for arg in "$@"; do
-	# check for "capture/checksum" args before launching tests
-	if [[ "${arg}" =~ ^"-"[0-9a-zA-Z]*"c"[0-9a-zA-Z]*$ ]]; then
-		capture=1
-	fi
-	if [[ "${arg}" =~ ^"-"[0-9a-zA-Z]*"C"[0-9a-zA-Z]*$ ]]; then
-		checksum=1
-	fi
-	if [[ "${arg}" =~ ^"-"[0-9a-zA-Z]*"i"[0-9a-zA-Z]*$ ]]; then
-		ip_mptcp=1
-	fi
-
-	# exception for the capture/checksum/ip_mptcp options, the rest means: a part of the tests
-	if ! [[ "${arg}" =~ ^"-"[cCi]+$ ]]; then
-		do_all_tests=0
-	fi
-done
-
-if [ $do_all_tests -eq 1 ]; then
-	all_tests
-	exit $ret
-fi
 
+tests=()
 while getopts 'fesltra64bpkdmchzuFICSi' opt; do
 	case $opt in
 		f)
-			subflows_tests
+			tests+=(subflows_tests)
 			;;
 		e)
-			subflows_error_tests
+			tests+=(subflows_error_tests)
 			;;
 		s)
-			signal_address_tests
+			tests+=(signal_address_tests)
 			;;
 		l)
-			link_failure_tests
+			tests+=(link_failure_tests)
 			;;
 		t)
-			add_addr_timeout_tests
+			tests+=(add_addr_timeout_tests)
 			;;
 		r)
-			remove_tests
+			tests+=(remove_tests)
 			;;
 		a)
-			add_tests
+			tests+=(add_tests)
 			;;
 		6)
-			ipv6_tests
+			tests+=(ipv6_tests)
 			;;
 		4)
-			v4mapped_tests
+			tests+=(v4mapped_tests)
 			;;
 		b)
-			backup_tests
+			tests+=(backup_tests)
 			;;
 		p)
-			add_addr_ports_tests
+			tests+=(add_addr_ports_tests)
 			;;
 		k)
-			syncookies_tests
+			tests+=(syncookies_tests)
 			;;
 		S)
-			checksum_tests
+			tests+=(checksum_tests)
 			;;
 		d)
-			deny_join_id0_tests
+			tests+=(deny_join_id0_tests)
 			;;
 		m)
-			fullmesh_tests
+			tests+=(fullmesh_tests)
 			;;
 		z)
-			fastclose_tests
+			tests+=(fastclose_tests)
 			;;
 		F)
-			fail_tests
+			tests+=(fail_tests)
 			;;
 		u)
-			userspace_tests
+			tests+=(userspace_tests)
 			;;
 		I)
-			implicit_tests
+			tests+=(implicit_tests)
 			;;
 		c)
+			capture=1
 			;;
 		C)
+			checksum=1
 			;;
 		i)
+			ip_mptcp=1
 			;;
 		h)
 			usage
@@ -2727,4 +2708,12 @@ while getopts 'fesltra64bpkdmchzuFICSi' opt; do
 	esac
 done
 
+if [ ${#tests[@]} -eq 0 ]; then
+	all_tests
+else
+	for subtests in "${tests[@]}"; do
+		"${subtests}"
+	done
+fi
+
 exit $ret
-- 
2.34.1

[PATCH mptcp-next v3 03/12] Squash to "selftests: mptcp: add implicit endpoint test case"

[Matthieu Baerts]

Move 'wait_mpj' with the other 'wait' helpers.

Like that, we have all the helpers first and then all groups of tests.
It is easier to find patterns in the tests parts, e.g. finding if there
are direct calls to 'ip netns exec', etc.

Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
---

Notes:
    to be squashed in "selftests: mptcp: add implicit endpoint test case"
    
    to be squashed in "selftests: mptcp: join: allow running -cCi"

 .../testing/selftests/net/mptcp/mptcp_join.sh | 30 +++++++++----------
 1 file changed, 15 insertions(+), 15 deletions(-)

diff --git a/tools/testing/selftests/net/mptcp/mptcp_join.sh b/tools/testing/selftests/net/mptcp/mptcp_join.sh
index 02ae2692f7fc..231bd8322415 100755
--- a/tools/testing/selftests/net/mptcp/mptcp_join.sh
+++ b/tools/testing/selftests/net/mptcp/mptcp_join.sh
@@ -365,6 +365,21 @@ wait_rm_addr()
 	done
 }
 
+wait_mpj()
+{
+	local ns="${1}"
+	local cnt old_cnt
+
+	old_cnt=$(ip netns exec ${ns} nstat -as | grep MPJoinAckRx | awk '{print $2}')
+
+	local i
+	for i in $(seq 10); do
+		cnt=$(ip netns exec ${ns} nstat -as | grep MPJoinAckRx | awk '{print $2}')
+		[ "$cnt" = "${old_cnt}" ] || break
+		sleep 0.1
+	done
+}
+
 pm_nl_set_limits()
 {
 	local ns=$1
@@ -2532,21 +2547,6 @@ userspace_tests()
 	chk_rm_nr 0 0
 }
 
-wait_mpj()
-{
-	local ns="${1}"
-	local cnt old_cnt
-
-	old_cnt=$(ip netns exec ${ns} nstat -as | grep MPJoinAckRx | awk '{print $2}')
-
-	local i
-	for i in $(seq 10); do
-		cnt=$(ip netns exec ${ns} nstat -as | grep MPJoinAckRx | awk '{print $2}')
-		[ "$cnt" = "${old_cnt}" ] || break
-		sleep 0.1
-	done
-}
-
 implicit_tests()
 {
 	# userspace pm type prevents add_addr
-- 
2.34.1

[PATCH mptcp-next v3 04/12] selftests: mptcp: join: define tests groups once

[Matthieu Baerts]

When defining a new tests group, it has to be define in multiple places:

- in the all_tests() function
- in the 'usage()' function
- in the getopts: short option + what to do when the option is used

Because it is easy to forget one of them, it is useful to have to define
them only once.

Note: only using an associative array would simplify the code but the
entries are stored in a hashtable and iterating over the different items
doesn't give the same order as the one used in the declaration of this
array. Because we want to run these tests in the same order as before, a
"simple" array is used first.

Reviewed-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
---
 .../testing/selftests/net/mptcp/mptcp_join.sh | 153 ++++++------------
 1 file changed, 49 insertions(+), 104 deletions(-)

diff --git a/tools/testing/selftests/net/mptcp/mptcp_join.sh b/tools/testing/selftests/net/mptcp/mptcp_join.sh
index 231bd8322415..9d14851f9732 100755
--- a/tools/testing/selftests/net/mptcp/mptcp_join.sh
+++ b/tools/testing/selftests/net/mptcp/mptcp_join.sh
@@ -19,6 +19,7 @@ check_invert=0
 validate_checksum=0
 init=0
 
+declare -A all_tests
 TEST_COUNT=0
 nr_blank=40
 
@@ -2570,29 +2571,6 @@ implicit_tests()
 	wait
 }
 
-all_tests()
-{
-	subflows_tests
-	subflows_error_tests
-	signal_address_tests
-	link_failure_tests
-	add_addr_timeout_tests
-	remove_tests
-	add_tests
-	ipv6_tests
-	v4mapped_tests
-	backup_tests
-	add_addr_ports_tests
-	syncookies_tests
-	checksum_tests
-	deny_join_id0_tests
-	fullmesh_tests
-	fastclose_tests
-	fail_tests
-	userspace_tests
-	implicit_tests
-}
-
 # [$1: error message]
 usage()
 {
@@ -2602,25 +2580,12 @@ usage()
 	fi
 
 	echo "mptcp_join usage:"
-	echo "  -f subflows_tests"
-	echo "  -e subflows_error_tests"
-	echo "  -s signal_address_tests"
-	echo "  -l link_failure_tests"
-	echo "  -t add_addr_timeout_tests"
-	echo "  -r remove_tests"
-	echo "  -a add_tests"
-	echo "  -6 ipv6_tests"
-	echo "  -4 v4mapped_tests"
-	echo "  -b backup_tests"
-	echo "  -p add_addr_ports_tests"
-	echo "  -k syncookies_tests"
-	echo "  -S checksum_tests"
-	echo "  -d deny_join_id0_tests"
-	echo "  -m fullmesh_tests"
-	echo "  -z fastclose_tests"
-	echo "  -F fail_tests"
-	echo "  -u userspace_tests"
-	echo "  -I implicit_tests"
+
+	local key
+	for key in "${!all_tests[@]}"; do
+		echo "  -${key} ${all_tests[${key}]}"
+	done
+
 	echo "  -c capture pcap files"
 	echo "  -C enable data checksum"
 	echo "  -i use ip mptcp"
@@ -2630,65 +2595,45 @@ usage()
 }
 
 
+# Use a "simple" array to force an specific order we cannot have with an associative one
+all_tests_sorted=(
+	f@subflows_tests
+	e@subflows_error_tests
+	s@signal_address_tests
+	l@link_failure_tests
+	t@add_addr_timeout_tests
+	r@remove_tests
+	a@add_tests
+	6@ipv6_tests
+	4@v4mapped_tests
+	b@backup_tests
+	p@add_addr_ports_tests
+	k@syncookies_tests
+	S@checksum_tests
+	d@deny_join_id0_tests
+	m@fullmesh_tests
+	z@fastclose_tests
+	F@fail_tests
+	u@userspace_tests
+	I@implicit_tests
+)
+
+all_tests_args=""
+all_tests_names=()
+for subtests in "${all_tests_sorted[@]}"; do
+	key="${subtests%@*}"
+	value="${subtests#*@}"
+
+	all_tests_args+="${key}"
+	all_tests_names+=("${value}")
+	all_tests[${key}]="${value}"
+done
+
 tests=()
-while getopts 'fesltra64bpkdmchzuFICSi' opt; do
+while getopts "${all_tests_args}cCih" opt; do
 	case $opt in
-		f)
-			tests+=(subflows_tests)
-			;;
-		e)
-			tests+=(subflows_error_tests)
-			;;
-		s)
-			tests+=(signal_address_tests)
-			;;
-		l)
-			tests+=(link_failure_tests)
-			;;
-		t)
-			tests+=(add_addr_timeout_tests)
-			;;
-		r)
-			tests+=(remove_tests)
-			;;
-		a)
-			tests+=(add_tests)
-			;;
-		6)
-			tests+=(ipv6_tests)
-			;;
-		4)
-			tests+=(v4mapped_tests)
-			;;
-		b)
-			tests+=(backup_tests)
-			;;
-		p)
-			tests+=(add_addr_ports_tests)
-			;;
-		k)
-			tests+=(syncookies_tests)
-			;;
-		S)
-			tests+=(checksum_tests)
-			;;
-		d)
-			tests+=(deny_join_id0_tests)
-			;;
-		m)
-			tests+=(fullmesh_tests)
-			;;
-		z)
-			tests+=(fastclose_tests)
-			;;
-		F)
-			tests+=(fail_tests)
-			;;
-		u)
-			tests+=(userspace_tests)
-			;;
-		I)
-			tests+=(implicit_tests)
+		["${all_tests_args}"])
+			tests+=("${all_tests[${opt}]}")
 			;;
 		c)
 			capture=1
@@ -2709,11 +2654,11 @@ while getopts 'fesltra64bpkdmchzuFICSi' opt; do
 done
 
 if [ ${#tests[@]} -eq 0 ]; then
-	all_tests
-else
-	for subtests in "${tests[@]}"; do
-		"${subtests}"
-	done
+	tests=("${all_tests_names[@]}")
 fi
 
+for subtests in "${tests[@]}"; do
+	"${subtests}"
+done
+
 exit $ret
-- 
2.34.1

[PATCH mptcp-next v3 05/12] selftests: mptcp: join: reset failing links

[Matthieu Baerts]

Best to always reset this env var before each test to avoid surprising
behaviour depending on the order tests are running.

Also clearly set it for the last failing links test is also needed when
only this test is executed.

Reviewed-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
---
 tools/testing/selftests/net/mptcp/mptcp_join.sh | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/tools/testing/selftests/net/mptcp/mptcp_join.sh b/tools/testing/selftests/net/mptcp/mptcp_join.sh
index 9d14851f9732..eb6735e2d570 100755
--- a/tools/testing/selftests/net/mptcp/mptcp_join.sh
+++ b/tools/testing/selftests/net/mptcp/mptcp_join.sh
@@ -23,6 +23,8 @@ declare -A all_tests
 TEST_COUNT=0
 nr_blank=40
 
+export FAILING_LINKS=""
+
 # generated using "nfbpf_compile '(ip && (ip[54] & 0xf0) == 0x30) ||
 #				  (ip6 && (ip6[74] & 0xf0) == 0x30)'"
 CBPF_MPTCP_SUBOPTION_ADD_ADDR="14,
@@ -64,6 +66,7 @@ init_partial()
 
 	check_invert=0
 	validate_checksum=$checksum
+	FAILING_LINKS=""
 
 	#  ns1              ns2
 	# ns1eth1    ns2eth1
@@ -1712,7 +1715,7 @@ link_failure_tests()
 	pm_nl_set_limits $ns1 0 2
 	pm_nl_add_endpoint $ns1 10.0.2.1 dev ns1eth2 flags signal
 	pm_nl_set_limits $ns2 1 2
-	export FAILING_LINKS="1"
+	FAILING_LINKS="1"
 	pm_nl_add_endpoint $ns2 10.0.3.2 dev ns2eth3 flags subflow,backup
 	run_tests $ns1 $ns2 10.0.1.1 1
 	chk_join_nr "backup subflow unused, link failure" 2 2 2
@@ -1727,7 +1730,7 @@ link_failure_tests()
 	pm_nl_add_endpoint $ns1 10.0.2.1 dev ns1eth2 flags signal
 	pm_nl_set_limits $ns2 1 2
 	pm_nl_add_endpoint $ns2 10.0.3.2 dev ns2eth3 flags subflow,backup
-	export FAILING_LINKS="1 2"
+	FAILING_LINKS="1 2"
 	run_tests $ns1 $ns2 10.0.1.1 1
 	chk_join_nr "backup flow used, multi links fail" 2 2 2
 	chk_add_nr 1 1
@@ -1742,6 +1745,7 @@ link_failure_tests()
 	pm_nl_add_endpoint $ns1 10.0.2.1 dev ns1eth2 flags signal
 	pm_nl_set_limits $ns2 1 3
 	pm_nl_add_endpoint $ns2 10.0.3.2 dev ns2eth3 flags subflow,backup
+	FAILING_LINKS="1 2"
 	run_tests $ns1 $ns2 10.0.1.1 2
 	chk_join_nr "backup flow used, bidi, link failure" 2 2 2
 	chk_add_nr 1 1
-- 
2.34.1

[PATCH mptcp-next v3 06/12] selftests: mptcp: join: option to execute specific tests

[Matthieu Baerts]

Often, it is needed to run one specific test.

There are options to run subgroups of tests but when only one fails, no
need to run all the subgroup. So far, the solution was to edit the
script to comment the tests that are not needed but that's not ideal.

Now, it is possible to run one specific test by giving the ID of the
tests that are going to be validated, e.g.

  ./mptcp_join.sh 36 37

This is cleaner and saves time.

Technically, the reset* functions now return 0 if the test can be
executed. This naturally creates sections per test in the code which is
also helpful to understand what a test is exactly doing.

Suggested-by: Paolo Abeni <pabeni@redhat.com>
Reviewed-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
---
 .../testing/selftests/net/mptcp/mptcp_join.sh | 1754 +++++++++--------
 1 file changed, 939 insertions(+), 815 deletions(-)

diff --git a/tools/testing/selftests/net/mptcp/mptcp_join.sh b/tools/testing/selftests/net/mptcp/mptcp_join.sh
index eb6735e2d570..b9d1b3508f1d 100755
--- a/tools/testing/selftests/net/mptcp/mptcp_join.sh
+++ b/tools/testing/selftests/net/mptcp/mptcp_join.sh
@@ -20,6 +20,7 @@ validate_checksum=0
 init=0
 
 declare -A all_tests
+declare -a only_tests
 TEST_COUNT=0
 nr_blank=40
 
@@ -150,8 +151,30 @@ cleanup()
 	cleanup_partial
 }
 
+skip_test()
+{
+	if [ "${#only_tests[@]}" -eq 0 ]; then
+		return 1
+	fi
+
+	local i
+	for i in "${only_tests[@]}"; do
+		if [ "${TEST_COUNT}" -eq "${i}" ]; then
+			return 1
+		fi
+	done
+
+	return 0
+}
+
 reset()
 {
+	TEST_COUNT=$((TEST_COUNT+1))
+
+	if skip_test; then
+		return 1
+	fi
+
 	if [ "${init}" != "1" ]; then
 		init
 	else
@@ -159,11 +182,13 @@ reset()
 	fi
 
 	init_partial
+
+	return 0
 }
 
 reset_with_cookies()
 {
-	reset
+	reset || return 1
 
 	for netns in "$ns1" "$ns2";do
 		ip netns exec $netns sysctl -q net.ipv4.tcp_syncookies=2
@@ -180,7 +205,7 @@ reset_with_add_addr_timeout()
 		tables="ip6tables"
 	fi
 
-	reset
+	reset || return 1
 
 	ip netns exec $ns1 sysctl -q net.mptcp.add_addr_timeout=1
 	ip netns exec $ns2 $tables -A OUTPUT -p tcp \
@@ -195,7 +220,7 @@ reset_with_checksum()
 	local ns1_enable=$1
 	local ns2_enable=$2
 
-	reset
+	reset || return 1
 
 	ip netns exec $ns1 sysctl -q net.mptcp.checksum_enabled=$ns1_enable
 	ip netns exec $ns2 sysctl -q net.mptcp.checksum_enabled=$ns2_enable
@@ -206,7 +231,7 @@ reset_with_allow_join_id0()
 	local ns1_enable=$1
 	local ns2_enable=$2
 
-	reset
+	reset || return 1
 
 	ip netns exec $ns1 sysctl -q net.mptcp.allow_join_initial_addr_port=$ns1_enable
 	ip netns exec $ns2 sysctl -q net.mptcp.allow_join_initial_addr_port=$ns2_enable
@@ -230,7 +255,7 @@ reset_with_allow_join_id0()
 # Netfilter is used to mark packets with enough data.
 reset_with_fail()
 {
-	reset
+	reset || return 1
 
 	ip netns exec $ns1 sysctl -q net.mptcp.checksum_enabled=1
 	ip netns exec $ns2 sysctl -q net.mptcp.checksum_enabled=1
@@ -567,8 +592,7 @@ do_transfer()
 	speed="$9"
 	sflags="${10}"
 
-	port=$((10000+$TEST_COUNT))
-	TEST_COUNT=$((TEST_COUNT+1))
+	port=$((10000+$TEST_COUNT-1))
 
 	:> "$cout"
 	:> "$sout"
@@ -1475,888 +1499,968 @@ set_userspace_pm()
 
 subflows_tests()
 {
-	reset
-	run_tests $ns1 $ns2 10.0.1.1
-	chk_join_nr "no JOIN" "0" "0" "0"
+	if reset; then
+		run_tests $ns1 $ns2 10.0.1.1
+		chk_join_nr "no JOIN" 0 0 0
+	fi
 
 	# subflow limited by client
-	reset
-	pm_nl_set_limits $ns1 0 0
-	pm_nl_set_limits $ns2 0 0
-	pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
-	run_tests $ns1 $ns2 10.0.1.1
-	chk_join_nr "single subflow, limited by client" 0 0 0
+	if reset; then
+		pm_nl_set_limits $ns1 0 0
+		pm_nl_set_limits $ns2 0 0
+		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
+		run_tests $ns1 $ns2 10.0.1.1
+		chk_join_nr "single subflow, limited by client" 0 0 0
+	fi
 
 	# subflow limited by server
-	reset
-	pm_nl_set_limits $ns1 0 0
-	pm_nl_set_limits $ns2 0 1
-	pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
-	run_tests $ns1 $ns2 10.0.1.1
-	chk_join_nr "single subflow, limited by server" 1 1 0
+	if reset; then
+		pm_nl_set_limits $ns1 0 0
+		pm_nl_set_limits $ns2 0 1
+		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
+		run_tests $ns1 $ns2 10.0.1.1
+		chk_join_nr "single subflow, limited by server" 1 1 0
+	fi
 
 	# subflow
-	reset
-	pm_nl_set_limits $ns1 0 1
-	pm_nl_set_limits $ns2 0 1
-	pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
-	run_tests $ns1 $ns2 10.0.1.1
-	chk_join_nr "single subflow" 1 1 1
+	if reset; then
+		pm_nl_set_limits $ns1 0 1
+		pm_nl_set_limits $ns2 0 1
+		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
+		run_tests $ns1 $ns2 10.0.1.1
+		chk_join_nr "single subflow" 1 1 1
+	fi
 
 	# multiple subflows
-	reset
-	pm_nl_set_limits $ns1 0 2
-	pm_nl_set_limits $ns2 0 2
-	pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
-	pm_nl_add_endpoint $ns2 10.0.2.2 flags subflow
-	run_tests $ns1 $ns2 10.0.1.1
-	chk_join_nr "multiple subflows" 2 2 2
+	if reset; then
+		pm_nl_set_limits $ns1 0 2
+		pm_nl_set_limits $ns2 0 2
+		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
+		pm_nl_add_endpoint $ns2 10.0.2.2 flags subflow
+		run_tests $ns1 $ns2 10.0.1.1
+		chk_join_nr "multiple subflows" 2 2 2
+	fi
 
 	# multiple subflows limited by server
-	reset
-	pm_nl_set_limits $ns1 0 1
-	pm_nl_set_limits $ns2 0 2
-	pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
-	pm_nl_add_endpoint $ns2 10.0.2.2 flags subflow
-	run_tests $ns1 $ns2 10.0.1.1
-	chk_join_nr "multiple subflows, limited by server" 2 2 1
+	if reset; then
+		pm_nl_set_limits $ns1 0 1
+		pm_nl_set_limits $ns2 0 2
+		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
+		pm_nl_add_endpoint $ns2 10.0.2.2 flags subflow
+		run_tests $ns1 $ns2 10.0.1.1
+		chk_join_nr "multiple subflows, limited by server" 2 2 1
+	fi
 
 	# single subflow, dev
-	reset
-	pm_nl_set_limits $ns1 0 1
-	pm_nl_set_limits $ns2 0 1
-	pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow dev ns2eth3
-	run_tests $ns1 $ns2 10.0.1.1
-	chk_join_nr "single subflow, dev" 1 1 1
+	if reset; then
+		pm_nl_set_limits $ns1 0 1
+		pm_nl_set_limits $ns2 0 1
+		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow dev ns2eth3
+		run_tests $ns1 $ns2 10.0.1.1
+		chk_join_nr "single subflow, dev" 1 1 1
+	fi
 }
 
 subflows_error_tests()
 {
 	# If a single subflow is configured, and matches the MPC src
 	# address, no additional subflow should be created
-	reset
-	pm_nl_set_limits $ns1 0 1
-	pm_nl_set_limits $ns2 0 1
-	pm_nl_add_endpoint $ns2 10.0.1.2 flags subflow
-	run_tests $ns1 $ns2 10.0.1.1 0 0 0 slow
-	chk_join_nr "no MPC reuse with single endpoint" 0 0 0
+	if reset; then
+		pm_nl_set_limits $ns1 0 1
+		pm_nl_set_limits $ns2 0 1
+		pm_nl_add_endpoint $ns2 10.0.1.2 flags subflow
+		run_tests $ns1 $ns2 10.0.1.1 0 0 0 slow
+		chk_join_nr "no MPC reuse with single endpoint" 0 0 0
+	fi
 
 	# multiple subflows, with subflow creation error
-	reset
-	pm_nl_set_limits $ns1 0 2
-	pm_nl_set_limits $ns2 0 2
-	pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
-	pm_nl_add_endpoint $ns2 10.0.2.2 flags subflow
-	ip netns exec $ns1 iptables -A INPUT -s 10.0.3.2 -p tcp -j REJECT
-	run_tests $ns1 $ns2 10.0.1.1 0 0 0 slow
-	chk_join_nr "multi subflows, with failing subflow" 1 1 1
+	if reset; then
+		pm_nl_set_limits $ns1 0 2
+		pm_nl_set_limits $ns2 0 2
+		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
+		pm_nl_add_endpoint $ns2 10.0.2.2 flags subflow
+		ip netns exec $ns1 iptables -A INPUT -s 10.0.3.2 -p tcp -j REJECT
+		run_tests $ns1 $ns2 10.0.1.1 0 0 0 slow
+		chk_join_nr "multi subflows, with failing subflow" 1 1 1
+	fi
 
 	# multiple subflows, with subflow timeout on MPJ
-	reset
-	pm_nl_set_limits $ns1 0 2
-	pm_nl_set_limits $ns2 0 2
-	pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
-	pm_nl_add_endpoint $ns2 10.0.2.2 flags subflow
-	ip netns exec $ns1 iptables -A INPUT -s 10.0.3.2 -p tcp -j DROP
-	run_tests $ns1 $ns2 10.0.1.1 0 0 0 slow
-	chk_join_nr "multi subflows, with subflow timeout" 1 1 1
+	if reset; then
+		pm_nl_set_limits $ns1 0 2
+		pm_nl_set_limits $ns2 0 2
+		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
+		pm_nl_add_endpoint $ns2 10.0.2.2 flags subflow
+		ip netns exec $ns1 iptables -A INPUT -s 10.0.3.2 -p tcp -j DROP
+		run_tests $ns1 $ns2 10.0.1.1 0 0 0 slow
+		chk_join_nr "multi subflows, with subflow timeout" 1 1 1
+	fi
 
 	# multiple subflows, check that the endpoint corresponding to
 	# closed subflow (due to reset) is not reused if additional
 	# subflows are added later
-	reset
-	pm_nl_set_limits $ns1 0 1
-	pm_nl_set_limits $ns2 0 1
-	pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
-	ip netns exec $ns1 iptables -A INPUT -s 10.0.3.2 -p tcp -j REJECT
-	run_tests $ns1 $ns2 10.0.1.1 0 0 0 slow &
-
-	# updates in the child shell do not have any effect here, we
-	# need to bump the test counter for the above case
-	TEST_COUNT=$((TEST_COUNT+1))
+	if reset; then
+		pm_nl_set_limits $ns1 0 1
+		pm_nl_set_limits $ns2 0 1
+		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
+		ip netns exec $ns1 iptables -A INPUT -s 10.0.3.2 -p tcp -j REJECT
+		run_tests $ns1 $ns2 10.0.1.1 0 0 0 slow &
 
-	# mpj subflow will be in TW after the reset
-	wait_attempt_fail $ns2
-	pm_nl_add_endpoint $ns2 10.0.2.2 flags subflow
-	wait
+		# mpj subflow will be in TW after the reset
+		wait_attempt_fail $ns2
+		pm_nl_add_endpoint $ns2 10.0.2.2 flags subflow
+		wait
 
-	# additional subflow could be created only if the PM select
-	# the later endpoint, skipping the already used one
-	chk_join_nr "multi subflows, fair usage on close" 1 1 1
+		# additional subflow could be created only if the PM select
+		# the later endpoint, skipping the already used one
+		chk_join_nr "multi subflows, fair usage on close" 1 1 1
+	fi
 }
 
 signal_address_tests()
 {
 	# add_address, unused
-	reset
-	pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
-	run_tests $ns1 $ns2 10.0.1.1
-	chk_join_nr "unused signal address" 0 0 0
-	chk_add_nr 1 1
+	if reset; then
+		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
+		run_tests $ns1 $ns2 10.0.1.1
+		chk_join_nr "unused signal address" 0 0 0
+		chk_add_nr 1 1
+	fi
 
 	# accept and use add_addr
-	reset
-	pm_nl_set_limits $ns1 0 1
-	pm_nl_set_limits $ns2 1 1
-	pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
-	run_tests $ns1 $ns2 10.0.1.1
-	chk_join_nr "signal address" 1 1 1
-	chk_add_nr 1 1
+	if reset; then
+		pm_nl_set_limits $ns1 0 1
+		pm_nl_set_limits $ns2 1 1
+		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
+		run_tests $ns1 $ns2 10.0.1.1
+		chk_join_nr "signal address" 1 1 1
+		chk_add_nr 1 1
+	fi
 
 	# accept and use add_addr with an additional subflow
 	# note: signal address in server ns and local addresses in client ns must
 	# belong to different subnets or one of the listed local address could be
 	# used for 'add_addr' subflow
-	reset
-	pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
-	pm_nl_set_limits $ns1 0 2
-	pm_nl_set_limits $ns2 1 2
-	pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
-	run_tests $ns1 $ns2 10.0.1.1
-	chk_join_nr "subflow and signal" 2 2 2
-	chk_add_nr 1 1
+	if reset; then
+		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
+		pm_nl_set_limits $ns1 0 2
+		pm_nl_set_limits $ns2 1 2
+		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
+		run_tests $ns1 $ns2 10.0.1.1
+		chk_join_nr "subflow and signal" 2 2 2
+		chk_add_nr 1 1
+	fi
 
 	# accept and use add_addr with additional subflows
-	reset
-	pm_nl_set_limits $ns1 0 3
-	pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
-	pm_nl_set_limits $ns2 1 3
-	pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
-	pm_nl_add_endpoint $ns2 10.0.4.2 flags subflow
-	run_tests $ns1 $ns2 10.0.1.1
-	chk_join_nr "multiple subflows and signal" 3 3 3
-	chk_add_nr 1 1
+	if reset; then
+		pm_nl_set_limits $ns1 0 3
+		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
+		pm_nl_set_limits $ns2 1 3
+		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
+		pm_nl_add_endpoint $ns2 10.0.4.2 flags subflow
+		run_tests $ns1 $ns2 10.0.1.1
+		chk_join_nr "multiple subflows and signal" 3 3 3
+		chk_add_nr 1 1
+	fi
 
 	# signal addresses
-	reset
-	pm_nl_set_limits $ns1 3 3
-	pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
-	pm_nl_add_endpoint $ns1 10.0.3.1 flags signal
-	pm_nl_add_endpoint $ns1 10.0.4.1 flags signal
-	pm_nl_set_limits $ns2 3 3
-	run_tests $ns1 $ns2 10.0.1.1
-	chk_join_nr "signal addresses" 3 3 3
-	chk_add_nr 3 3
+	if reset; then
+		pm_nl_set_limits $ns1 3 3
+		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
+		pm_nl_add_endpoint $ns1 10.0.3.1 flags signal
+		pm_nl_add_endpoint $ns1 10.0.4.1 flags signal
+		pm_nl_set_limits $ns2 3 3
+		run_tests $ns1 $ns2 10.0.1.1
+		chk_join_nr "signal addresses" 3 3 3
+		chk_add_nr 3 3
+	fi
 
 	# signal invalid addresses
-	reset
-	pm_nl_set_limits $ns1 3 3
-	pm_nl_add_endpoint $ns1 10.0.12.1 flags signal
-	pm_nl_add_endpoint $ns1 10.0.3.1 flags signal
-	pm_nl_add_endpoint $ns1 10.0.14.1 flags signal
-	pm_nl_set_limits $ns2 3 3
-	run_tests $ns1 $ns2 10.0.1.1
-	chk_join_nr "signal invalid addresses" 1 1 1
-	chk_add_nr 3 3
+	if reset; then
+		pm_nl_set_limits $ns1 3 3
+		pm_nl_add_endpoint $ns1 10.0.12.1 flags signal
+		pm_nl_add_endpoint $ns1 10.0.3.1 flags signal
+		pm_nl_add_endpoint $ns1 10.0.14.1 flags signal
+		pm_nl_set_limits $ns2 3 3
+		run_tests $ns1 $ns2 10.0.1.1
+		chk_join_nr "signal invalid addresses" 1 1 1
+		chk_add_nr 3 3
+	fi
 
 	# signal addresses race test
-	reset
-	pm_nl_set_limits $ns1 4 4
-	pm_nl_set_limits $ns2 4 4
-	pm_nl_add_endpoint $ns1 10.0.1.1 flags signal
-	pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
-	pm_nl_add_endpoint $ns1 10.0.3.1 flags signal
-	pm_nl_add_endpoint $ns1 10.0.4.1 flags signal
-	pm_nl_add_endpoint $ns2 10.0.1.2 flags signal
-	pm_nl_add_endpoint $ns2 10.0.2.2 flags signal
-	pm_nl_add_endpoint $ns2 10.0.3.2 flags signal
-	pm_nl_add_endpoint $ns2 10.0.4.2 flags signal
-
-	# the peer could possibly miss some addr notification, allow retransmission
-	ip netns exec $ns1 sysctl -q net.mptcp.add_addr_timeout=1
-	run_tests $ns1 $ns2 10.0.1.1 0 0 0 slow
-	chk_join_nr "signal addresses race test" 3 3 3
+	if reset; then
+		pm_nl_set_limits $ns1 4 4
+		pm_nl_set_limits $ns2 4 4
+		pm_nl_add_endpoint $ns1 10.0.1.1 flags signal
+		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
+		pm_nl_add_endpoint $ns1 10.0.3.1 flags signal
+		pm_nl_add_endpoint $ns1 10.0.4.1 flags signal
+		pm_nl_add_endpoint $ns2 10.0.1.2 flags signal
+		pm_nl_add_endpoint $ns2 10.0.2.2 flags signal
+		pm_nl_add_endpoint $ns2 10.0.3.2 flags signal
+		pm_nl_add_endpoint $ns2 10.0.4.2 flags signal
+
+		# the peer could possibly miss some addr notification, allow retransmission
+		ip netns exec $ns1 sysctl -q net.mptcp.add_addr_timeout=1
+		run_tests $ns1 $ns2 10.0.1.1 0 0 0 slow
+		chk_join_nr "signal addresses race test" 3 3 3
 
-	# the server will not signal the address terminating
-	# the MPC subflow
-	chk_add_nr 3 3
+		# the server will not signal the address terminating
+		# the MPC subflow
+		chk_add_nr 3 3
+	fi
 }
 
 link_failure_tests()
 {
 	# accept and use add_addr with additional subflows and link loss
-	reset
-
-	# without any b/w limit each veth could spool the packets and get
-	# them acked at xmit time, so that the corresponding subflow will
-	# have almost always no outstanding pkts, the scheduler will pick
-	# always the first subflow and we will have hard time testing
-	# active backup and link switch-over.
-	# Let's set some arbitrary (low) virtual link limits.
-	init_shapers
-	pm_nl_set_limits $ns1 0 3
-	pm_nl_add_endpoint $ns1 10.0.2.1 dev ns1eth2 flags signal
-	pm_nl_set_limits $ns2 1 3
-	pm_nl_add_endpoint $ns2 10.0.3.2 dev ns2eth3 flags subflow
-	pm_nl_add_endpoint $ns2 10.0.4.2 dev ns2eth4 flags subflow
-	run_tests $ns1 $ns2 10.0.1.1 1
-	chk_join_nr "multiple flows, signal, link failure" 3 3 3
-	chk_add_nr 1 1
-	chk_stale_nr $ns2 1 5 1
+	if reset; then
+		# without any b/w limit each veth could spool the packets and get
+		# them acked at xmit time, so that the corresponding subflow will
+		# have almost always no outstanding pkts, the scheduler will pick
+		# always the first subflow and we will have hard time testing
+		# active backup and link switch-over.
+		# Let's set some arbitrary (low) virtual link limits.
+		init_shapers
+		pm_nl_set_limits $ns1 0 3
+		pm_nl_add_endpoint $ns1 10.0.2.1 dev ns1eth2 flags signal
+		pm_nl_set_limits $ns2 1 3
+		pm_nl_add_endpoint $ns2 10.0.3.2 dev ns2eth3 flags subflow
+		pm_nl_add_endpoint $ns2 10.0.4.2 dev ns2eth4 flags subflow
+		run_tests $ns1 $ns2 10.0.1.1 1
+		chk_join_nr "multiple flows, signal, link failure" 3 3 3
+		chk_add_nr 1 1
+		chk_stale_nr $ns2 1 5 1
+	fi
 
 	# accept and use add_addr with additional subflows and link loss
 	# for bidirectional transfer
-	reset
-	init_shapers
-	pm_nl_set_limits $ns1 0 3
-	pm_nl_add_endpoint $ns1 10.0.2.1 dev ns1eth2 flags signal
-	pm_nl_set_limits $ns2 1 3
-	pm_nl_add_endpoint $ns2 10.0.3.2 dev ns2eth3 flags subflow
-	pm_nl_add_endpoint $ns2 10.0.4.2 dev ns2eth4 flags subflow
-	run_tests $ns1 $ns2 10.0.1.1 2
-	chk_join_nr "multi flows, signal, bidi, link fail" 3 3 3
-	chk_add_nr 1 1
-	chk_stale_nr $ns2 1 -1 1
+	if reset; then
+		init_shapers
+		pm_nl_set_limits $ns1 0 3
+		pm_nl_add_endpoint $ns1 10.0.2.1 dev ns1eth2 flags signal
+		pm_nl_set_limits $ns2 1 3
+		pm_nl_add_endpoint $ns2 10.0.3.2 dev ns2eth3 flags subflow
+		pm_nl_add_endpoint $ns2 10.0.4.2 dev ns2eth4 flags subflow
+		run_tests $ns1 $ns2 10.0.1.1 2
+		chk_join_nr "multi flows, signal, bidi, link fail" 3 3 3
+		chk_add_nr 1 1
+		chk_stale_nr $ns2 1 -1 1
+	fi
 
 	# 2 subflows plus 1 backup subflow with a lossy link, backup
 	# will never be used
-	reset
-	init_shapers
-	pm_nl_set_limits $ns1 0 2
-	pm_nl_add_endpoint $ns1 10.0.2.1 dev ns1eth2 flags signal
-	pm_nl_set_limits $ns2 1 2
-	FAILING_LINKS="1"
-	pm_nl_add_endpoint $ns2 10.0.3.2 dev ns2eth3 flags subflow,backup
-	run_tests $ns1 $ns2 10.0.1.1 1
-	chk_join_nr "backup subflow unused, link failure" 2 2 2
-	chk_add_nr 1 1
-	chk_link_usage $ns2 ns2eth3 $cinsent 0
+	if reset; then
+		init_shapers
+		pm_nl_set_limits $ns1 0 2
+		pm_nl_add_endpoint $ns1 10.0.2.1 dev ns1eth2 flags signal
+		pm_nl_set_limits $ns2 1 2
+		FAILING_LINKS="1"
+		pm_nl_add_endpoint $ns2 10.0.3.2 dev ns2eth3 flags subflow,backup
+		run_tests $ns1 $ns2 10.0.1.1 1
+		chk_join_nr "backup subflow unused, link failure" 2 2 2
+		chk_add_nr 1 1
+		chk_link_usage $ns2 ns2eth3 $cinsent 0
+	fi
 
 	# 2 lossy links after half transfer, backup will get half of
 	# the traffic
-	reset
-	init_shapers
-	pm_nl_set_limits $ns1 0 2
-	pm_nl_add_endpoint $ns1 10.0.2.1 dev ns1eth2 flags signal
-	pm_nl_set_limits $ns2 1 2
-	pm_nl_add_endpoint $ns2 10.0.3.2 dev ns2eth3 flags subflow,backup
-	FAILING_LINKS="1 2"
-	run_tests $ns1 $ns2 10.0.1.1 1
-	chk_join_nr "backup flow used, multi links fail" 2 2 2
-	chk_add_nr 1 1
-	chk_stale_nr $ns2 2 4 2
-	chk_link_usage $ns2 ns2eth3 $cinsent 50
+	if reset; then
+		init_shapers
+		pm_nl_set_limits $ns1 0 2
+		pm_nl_add_endpoint $ns1 10.0.2.1 dev ns1eth2 flags signal
+		pm_nl_set_limits $ns2 1 2
+		pm_nl_add_endpoint $ns2 10.0.3.2 dev ns2eth3 flags subflow,backup
+		FAILING_LINKS="1 2"
+		run_tests $ns1 $ns2 10.0.1.1 1
+		chk_join_nr "backup flow used, multi links fail" 2 2 2
+		chk_add_nr 1 1
+		chk_stale_nr $ns2 2 4 2
+		chk_link_usage $ns2 ns2eth3 $cinsent 50
+	fi
 
 	# use a backup subflow with the first subflow on a lossy link
 	# for bidirectional transfer
-	reset
-	init_shapers
-	pm_nl_set_limits $ns1 0 2
-	pm_nl_add_endpoint $ns1 10.0.2.1 dev ns1eth2 flags signal
-	pm_nl_set_limits $ns2 1 3
-	pm_nl_add_endpoint $ns2 10.0.3.2 dev ns2eth3 flags subflow,backup
-	FAILING_LINKS="1 2"
-	run_tests $ns1 $ns2 10.0.1.1 2
-	chk_join_nr "backup flow used, bidi, link failure" 2 2 2
-	chk_add_nr 1 1
-	chk_stale_nr $ns2 1 -1 2
-	chk_link_usage $ns2 ns2eth3 $cinsent 50
+	if reset; then
+		init_shapers
+		pm_nl_set_limits $ns1 0 2
+		pm_nl_add_endpoint $ns1 10.0.2.1 dev ns1eth2 flags signal
+		pm_nl_set_limits $ns2 1 3
+		pm_nl_add_endpoint $ns2 10.0.3.2 dev ns2eth3 flags subflow,backup
+		FAILING_LINKS="1 2"
+		run_tests $ns1 $ns2 10.0.1.1 2
+		chk_join_nr "backup flow used, bidi, link failure" 2 2 2
+		chk_add_nr 1 1
+		chk_stale_nr $ns2 1 -1 2
+		chk_link_usage $ns2 ns2eth3 $cinsent 50
+	fi
 }
 
 add_addr_timeout_tests()
 {
 	# add_addr timeout
-	reset_with_add_addr_timeout
-	pm_nl_set_limits $ns1 0 1
-	pm_nl_set_limits $ns2 1 1
-	pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
-	run_tests $ns1 $ns2 10.0.1.1 0 0 0 slow
-	chk_join_nr "signal address, ADD_ADDR timeout" 1 1 1
-	chk_add_nr 4 0
+	if reset_with_add_addr_timeout; then
+		pm_nl_set_limits $ns1 0 1
+		pm_nl_set_limits $ns2 1 1
+		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
+		run_tests $ns1 $ns2 10.0.1.1 0 0 0 slow
+		chk_join_nr "signal address, ADD_ADDR timeout" 1 1 1
+		chk_add_nr 4 0
+	fi
 
 	# add_addr timeout IPv6
-	reset_with_add_addr_timeout 6
-	pm_nl_set_limits $ns1 0 1
-	pm_nl_set_limits $ns2 1 1
-	pm_nl_add_endpoint $ns1 dead:beef:2::1 flags signal
-	run_tests $ns1 $ns2 dead:beef:1::1 0 0 0 slow
-	chk_join_nr "signal address, ADD_ADDR6 timeout" 1 1 1
-	chk_add_nr 4 0
+	if reset_with_add_addr_timeout 6; then
+		pm_nl_set_limits $ns1 0 1
+		pm_nl_set_limits $ns2 1 1
+		pm_nl_add_endpoint $ns1 dead:beef:2::1 flags signal
+		run_tests $ns1 $ns2 dead:beef:1::1 0 0 0 slow
+		chk_join_nr "signal address, ADD_ADDR6 timeout" 1 1 1
+		chk_add_nr 4 0
+	fi
 
 	# signal addresses timeout
-	reset_with_add_addr_timeout
-	pm_nl_set_limits $ns1 2 2
-	pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
-	pm_nl_add_endpoint $ns1 10.0.3.1 flags signal
-	pm_nl_set_limits $ns2 2 2
-	run_tests $ns1 $ns2 10.0.1.1 0 0 0 speed_10
-	chk_join_nr "signal addresses, ADD_ADDR timeout" 2 2 2
-	chk_add_nr 8 0
+	if reset_with_add_addr_timeout; then
+		pm_nl_set_limits $ns1 2 2
+		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
+		pm_nl_add_endpoint $ns1 10.0.3.1 flags signal
+		pm_nl_set_limits $ns2 2 2
+		run_tests $ns1 $ns2 10.0.1.1 0 0 0 speed_10
+		chk_join_nr "signal addresses, ADD_ADDR timeout" 2 2 2
+		chk_add_nr 8 0
+	fi
 
 	# signal invalid addresses timeout
-	reset_with_add_addr_timeout
-	pm_nl_set_limits $ns1 2 2
-	pm_nl_add_endpoint $ns1 10.0.12.1 flags signal
-	pm_nl_add_endpoint $ns1 10.0.3.1 flags signal
-	pm_nl_set_limits $ns2 2 2
-	run_tests $ns1 $ns2 10.0.1.1 0 0 0 speed_10
-	chk_join_nr "invalid address, ADD_ADDR timeout" 1 1 1
-	chk_add_nr 8 0
+	if reset_with_add_addr_timeout; then
+		pm_nl_set_limits $ns1 2 2
+		pm_nl_add_endpoint $ns1 10.0.12.1 flags signal
+		pm_nl_add_endpoint $ns1 10.0.3.1 flags signal
+		pm_nl_set_limits $ns2 2 2
+		run_tests $ns1 $ns2 10.0.1.1 0 0 0 speed_10
+		chk_join_nr "invalid address, ADD_ADDR timeout" 1 1 1
+		chk_add_nr 8 0
+	fi
 }
 
 remove_tests()
 {
 	# single subflow, remove
-	reset
-	pm_nl_set_limits $ns1 0 1
-	pm_nl_set_limits $ns2 0 1
-	pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
-	run_tests $ns1 $ns2 10.0.1.1 0 0 -1 slow
-	chk_join_nr "remove single subflow" 1 1 1
-	chk_rm_nr 1 1
+	if reset; then
+		pm_nl_set_limits $ns1 0 1
+		pm_nl_set_limits $ns2 0 1
+		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
+		run_tests $ns1 $ns2 10.0.1.1 0 0 -1 slow
+		chk_join_nr "remove single subflow" 1 1 1
+		chk_rm_nr 1 1
+	fi
 
 	# multiple subflows, remove
-	reset
-	pm_nl_set_limits $ns1 0 2
-	pm_nl_set_limits $ns2 0 2
-	pm_nl_add_endpoint $ns2 10.0.2.2 flags subflow
-	pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
-	run_tests $ns1 $ns2 10.0.1.1 0 0 -2 slow
-	chk_join_nr "remove multiple subflows" 2 2 2
-	chk_rm_nr 2 2
+	if reset; then
+		pm_nl_set_limits $ns1 0 2
+		pm_nl_set_limits $ns2 0 2
+		pm_nl_add_endpoint $ns2 10.0.2.2 flags subflow
+		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
+		run_tests $ns1 $ns2 10.0.1.1 0 0 -2 slow
+		chk_join_nr "remove multiple subflows" 2 2 2
+		chk_rm_nr 2 2
+	fi
 
 	# single address, remove
-	reset
-	pm_nl_set_limits $ns1 0 1
-	pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
-	pm_nl_set_limits $ns2 1 1
-	run_tests $ns1 $ns2 10.0.1.1 0 -1 0 slow
-	chk_join_nr "remove single address" 1 1 1
-	chk_add_nr 1 1
-	chk_rm_nr 1 1 invert
+	if reset; then
+		pm_nl_set_limits $ns1 0 1
+		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
+		pm_nl_set_limits $ns2 1 1
+		run_tests $ns1 $ns2 10.0.1.1 0 -1 0 slow
+		chk_join_nr "remove single address" 1 1 1
+		chk_add_nr 1 1
+		chk_rm_nr 1 1 invert
+	fi
 
 	# subflow and signal, remove
-	reset
-	pm_nl_set_limits $ns1 0 2
-	pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
-	pm_nl_set_limits $ns2 1 2
-	pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
-	run_tests $ns1 $ns2 10.0.1.1 0 -1 -1 slow
-	chk_join_nr "remove subflow and signal" 2 2 2
-	chk_add_nr 1 1
-	chk_rm_nr 1 1
+	if reset; then
+		pm_nl_set_limits $ns1 0 2
+		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
+		pm_nl_set_limits $ns2 1 2
+		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
+		run_tests $ns1 $ns2 10.0.1.1 0 -1 -1 slow
+		chk_join_nr "remove subflow and signal" 2 2 2
+		chk_add_nr 1 1
+		chk_rm_nr 1 1
+	fi
 
 	# subflows and signal, remove
-	reset
-	pm_nl_set_limits $ns1 0 3
-	pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
-	pm_nl_set_limits $ns2 1 3
-	pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
-	pm_nl_add_endpoint $ns2 10.0.4.2 flags subflow
-	run_tests $ns1 $ns2 10.0.1.1 0 -1 -2 slow
-	chk_join_nr "remove subflows and signal" 3 3 3
-	chk_add_nr 1 1
-	chk_rm_nr 2 2
+	if reset; then
+		pm_nl_set_limits $ns1 0 3
+		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
+		pm_nl_set_limits $ns2 1 3
+		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
+		pm_nl_add_endpoint $ns2 10.0.4.2 flags subflow
+		run_tests $ns1 $ns2 10.0.1.1 0 -1 -2 slow
+		chk_join_nr "remove subflows and signal" 3 3 3
+		chk_add_nr 1 1
+		chk_rm_nr 2 2
+	fi
 
 	# addresses remove
-	reset
-	pm_nl_set_limits $ns1 3 3
-	pm_nl_add_endpoint $ns1 10.0.2.1 flags signal id 250
-	pm_nl_add_endpoint $ns1 10.0.3.1 flags signal
-	pm_nl_add_endpoint $ns1 10.0.4.1 flags signal
-	pm_nl_set_limits $ns2 3 3
-	run_tests $ns1 $ns2 10.0.1.1 0 -3 0 slow
-	chk_join_nr "remove addresses" 3 3 3
-	chk_add_nr 3 3
-	chk_rm_nr 3 3 invert
+	if reset; then
+		pm_nl_set_limits $ns1 3 3
+		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal id 250
+		pm_nl_add_endpoint $ns1 10.0.3.1 flags signal
+		pm_nl_add_endpoint $ns1 10.0.4.1 flags signal
+		pm_nl_set_limits $ns2 3 3
+		run_tests $ns1 $ns2 10.0.1.1 0 -3 0 slow
+		chk_join_nr "remove addresses" 3 3 3
+		chk_add_nr 3 3
+		chk_rm_nr 3 3 invert
+	fi
 
 	# invalid addresses remove
-	reset
-	pm_nl_set_limits $ns1 3 3
-	pm_nl_add_endpoint $ns1 10.0.12.1 flags signal
-	pm_nl_add_endpoint $ns1 10.0.3.1 flags signal
-	pm_nl_add_endpoint $ns1 10.0.14.1 flags signal
-	pm_nl_set_limits $ns2 3 3
-	run_tests $ns1 $ns2 10.0.1.1 0 -3 0 slow
-	chk_join_nr "remove invalid addresses" 1 1 1
-	chk_add_nr 3 3
-	chk_rm_nr 3 1 invert
+	if reset; then
+		pm_nl_set_limits $ns1 3 3
+		pm_nl_add_endpoint $ns1 10.0.12.1 flags signal
+		pm_nl_add_endpoint $ns1 10.0.3.1 flags signal
+		pm_nl_add_endpoint $ns1 10.0.14.1 flags signal
+		pm_nl_set_limits $ns2 3 3
+		run_tests $ns1 $ns2 10.0.1.1 0 -3 0 slow
+		chk_join_nr "remove invalid addresses" 1 1 1
+		chk_add_nr 3 3
+		chk_rm_nr 3 1 invert
+	fi
 
 	# subflows and signal, flush
-	reset
-	pm_nl_set_limits $ns1 0 3
-	pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
-	pm_nl_set_limits $ns2 1 3
-	pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
-	pm_nl_add_endpoint $ns2 10.0.4.2 flags subflow
-	run_tests $ns1 $ns2 10.0.1.1 0 -8 -8 slow
-	chk_join_nr "flush subflows and signal" 3 3 3
-	chk_add_nr 1 1
-	chk_rm_nr 1 3 invert simult
+	if reset; then
+		pm_nl_set_limits $ns1 0 3
+		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
+		pm_nl_set_limits $ns2 1 3
+		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
+		pm_nl_add_endpoint $ns2 10.0.4.2 flags subflow
+		run_tests $ns1 $ns2 10.0.1.1 0 -8 -8 slow
+		chk_join_nr "flush subflows and signal" 3 3 3
+		chk_add_nr 1 1
+		chk_rm_nr 1 3 invert simult
+	fi
 
 	# subflows flush
-	reset
-	pm_nl_set_limits $ns1 3 3
-	pm_nl_set_limits $ns2 3 3
-	pm_nl_add_endpoint $ns2 10.0.2.2 flags subflow id 150
-	pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
-	pm_nl_add_endpoint $ns2 10.0.4.2 flags subflow
-	run_tests $ns1 $ns2 10.0.1.1 0 -8 -8 slow
-	chk_join_nr "flush subflows" 3 3 3
-	chk_rm_nr 0 3 simult
+	if reset; then
+		pm_nl_set_limits $ns1 3 3
+		pm_nl_set_limits $ns2 3 3
+		pm_nl_add_endpoint $ns2 10.0.2.2 flags subflow id 150
+		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
+		pm_nl_add_endpoint $ns2 10.0.4.2 flags subflow
+		run_tests $ns1 $ns2 10.0.1.1 0 -8 -8 slow
+		chk_join_nr "flush subflows" 3 3 3
+		chk_rm_nr 0 3 simult
+	fi
 
 	# addresses flush
-	reset
-	pm_nl_set_limits $ns1 3 3
-	pm_nl_add_endpoint $ns1 10.0.2.1 flags signal id 250
-	pm_nl_add_endpoint $ns1 10.0.3.1 flags signal
-	pm_nl_add_endpoint $ns1 10.0.4.1 flags signal
-	pm_nl_set_limits $ns2 3 3
-	run_tests $ns1 $ns2 10.0.1.1 0 -8 -8 slow
-	chk_join_nr "flush addresses" 3 3 3
-	chk_add_nr 3 3
-	chk_rm_nr 3 3 invert simult
+	if reset; then
+		pm_nl_set_limits $ns1 3 3
+		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal id 250
+		pm_nl_add_endpoint $ns1 10.0.3.1 flags signal
+		pm_nl_add_endpoint $ns1 10.0.4.1 flags signal
+		pm_nl_set_limits $ns2 3 3
+		run_tests $ns1 $ns2 10.0.1.1 0 -8 -8 slow
+		chk_join_nr "flush addresses" 3 3 3
+		chk_add_nr 3 3
+		chk_rm_nr 3 3 invert simult
+	fi
 
 	# invalid addresses flush
-	reset
-	pm_nl_set_limits $ns1 3 3
-	pm_nl_add_endpoint $ns1 10.0.12.1 flags signal
-	pm_nl_add_endpoint $ns1 10.0.3.1 flags signal
-	pm_nl_add_endpoint $ns1 10.0.14.1 flags signal
-	pm_nl_set_limits $ns2 3 3
-	run_tests $ns1 $ns2 10.0.1.1 0 -8 0 slow
-	chk_join_nr "flush invalid addresses" 1 1 1
-	chk_add_nr 3 3
-	chk_rm_nr 3 1 invert
+	if reset; then
+		pm_nl_set_limits $ns1 3 3
+		pm_nl_add_endpoint $ns1 10.0.12.1 flags signal
+		pm_nl_add_endpoint $ns1 10.0.3.1 flags signal
+		pm_nl_add_endpoint $ns1 10.0.14.1 flags signal
+		pm_nl_set_limits $ns2 3 3
+		run_tests $ns1 $ns2 10.0.1.1 0 -8 0 slow
+		chk_join_nr "flush invalid addresses" 1 1 1
+		chk_add_nr 3 3
+		chk_rm_nr 3 1 invert
+	fi
 
 	# remove id 0 subflow
-	reset
-	pm_nl_set_limits $ns1 0 1
-	pm_nl_set_limits $ns2 0 1
-	pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
-	run_tests $ns1 $ns2 10.0.1.1 0 0 -9 slow
-	chk_join_nr "remove id 0 subflow" 1 1 1
-	chk_rm_nr 1 1
+	if reset; then
+		pm_nl_set_limits $ns1 0 1
+		pm_nl_set_limits $ns2 0 1
+		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
+		run_tests $ns1 $ns2 10.0.1.1 0 0 -9 slow
+		chk_join_nr "remove id 0 subflow" 1 1 1
+		chk_rm_nr 1 1
+	fi
 
 	# remove id 0 address
-	reset
-	pm_nl_set_limits $ns1 0 1
-	pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
-	pm_nl_set_limits $ns2 1 1
-	run_tests $ns1 $ns2 10.0.1.1 0 -9 0 slow
-	chk_join_nr "remove id 0 address" 1 1 1
-	chk_add_nr 1 1
-	chk_rm_nr 1 1 invert
+	if reset; then
+		pm_nl_set_limits $ns1 0 1
+		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
+		pm_nl_set_limits $ns2 1 1
+		run_tests $ns1 $ns2 10.0.1.1 0 -9 0 slow
+		chk_join_nr "remove id 0 address" 1 1 1
+		chk_add_nr 1 1
+		chk_rm_nr 1 1 invert
+	fi
 }
 
 add_tests()
 {
 	# add single subflow
-	reset
-	pm_nl_set_limits $ns1 0 1
-	pm_nl_set_limits $ns2 0 1
-	run_tests $ns1 $ns2 10.0.1.1 0 0 1 slow
-	chk_join_nr "add single subflow" 1 1 1
+	if reset; then
+		pm_nl_set_limits $ns1 0 1
+		pm_nl_set_limits $ns2 0 1
+		run_tests $ns1 $ns2 10.0.1.1 0 0 1 slow
+		chk_join_nr "add single subflow" 1 1 1
+	fi
 
 	# add signal address
-	reset
-	pm_nl_set_limits $ns1 0 1
-	pm_nl_set_limits $ns2 1 1
-	run_tests $ns1 $ns2 10.0.1.1 0 1 0 slow
-	chk_join_nr "add signal address" 1 1 1
-	chk_add_nr 1 1
+	if reset; then
+		pm_nl_set_limits $ns1 0 1
+		pm_nl_set_limits $ns2 1 1
+		run_tests $ns1 $ns2 10.0.1.1 0 1 0 slow
+		chk_join_nr "add signal address" 1 1 1
+		chk_add_nr 1 1
+	fi
 
 	# add multiple subflows
-	reset
-	pm_nl_set_limits $ns1 0 2
-	pm_nl_set_limits $ns2 0 2
-	run_tests $ns1 $ns2 10.0.1.1 0 0 2 slow
-	chk_join_nr "add multiple subflows" 2 2 2
+	if reset; then
+		pm_nl_set_limits $ns1 0 2
+		pm_nl_set_limits $ns2 0 2
+		run_tests $ns1 $ns2 10.0.1.1 0 0 2 slow
+		chk_join_nr "add multiple subflows" 2 2 2
+	fi
 
 	# add multiple subflows IPv6
-	reset
-	pm_nl_set_limits $ns1 0 2
-	pm_nl_set_limits $ns2 0 2
-	run_tests $ns1 $ns2 dead:beef:1::1 0 0 2 slow
-	chk_join_nr "add multiple subflows IPv6" 2 2 2
+	if reset; then
+		pm_nl_set_limits $ns1 0 2
+		pm_nl_set_limits $ns2 0 2
+		run_tests $ns1 $ns2 dead:beef:1::1 0 0 2 slow
+		chk_join_nr "add multiple subflows IPv6" 2 2 2
+	fi
 
 	# add multiple addresses IPv6
-	reset
-	pm_nl_set_limits $ns1 0 2
-	pm_nl_set_limits $ns2 2 2
-	run_tests $ns1 $ns2 dead:beef:1::1 0 2 0 slow
-	chk_join_nr "add multiple addresses IPv6" 2 2 2
-	chk_add_nr 2 2
+	if reset; then
+		pm_nl_set_limits $ns1 0 2
+		pm_nl_set_limits $ns2 2 2
+		run_tests $ns1 $ns2 dead:beef:1::1 0 2 0 slow
+		chk_join_nr "add multiple addresses IPv6" 2 2 2
+		chk_add_nr 2 2
+	fi
 }
 
 ipv6_tests()
 {
 	# subflow IPv6
-	reset
-	pm_nl_set_limits $ns1 0 1
-	pm_nl_set_limits $ns2 0 1
-	pm_nl_add_endpoint $ns2 dead:beef:3::2 dev ns2eth3 flags subflow
-	run_tests $ns1 $ns2 dead:beef:1::1 0 0 0 slow
-	chk_join_nr "single subflow IPv6" 1 1 1
+	if reset; then
+		pm_nl_set_limits $ns1 0 1
+		pm_nl_set_limits $ns2 0 1
+		pm_nl_add_endpoint $ns2 dead:beef:3::2 dev ns2eth3 flags subflow
+		run_tests $ns1 $ns2 dead:beef:1::1 0 0 0 slow
+		chk_join_nr "single subflow IPv6" 1 1 1
+	fi
 
 	# add_address, unused IPv6
-	reset
-	pm_nl_add_endpoint $ns1 dead:beef:2::1 flags signal
-	run_tests $ns1 $ns2 dead:beef:1::1 0 0 0 slow
-	chk_join_nr "unused signal address IPv6" 0 0 0
-	chk_add_nr 1 1
+	if reset; then
+		pm_nl_add_endpoint $ns1 dead:beef:2::1 flags signal
+		run_tests $ns1 $ns2 dead:beef:1::1 0 0 0 slow
+		chk_join_nr "unused signal address IPv6" 0 0 0
+		chk_add_nr 1 1
+	fi
 
 	# signal address IPv6
-	reset
-	pm_nl_set_limits $ns1 0 1
-	pm_nl_add_endpoint $ns1 dead:beef:2::1 flags signal
-	pm_nl_set_limits $ns2 1 1
-	run_tests $ns1 $ns2 dead:beef:1::1 0 0 0 slow
-	chk_join_nr "single address IPv6" 1 1 1
-	chk_add_nr 1 1
+	if reset; then
+		pm_nl_set_limits $ns1 0 1
+		pm_nl_add_endpoint $ns1 dead:beef:2::1 flags signal
+		pm_nl_set_limits $ns2 1 1
+		run_tests $ns1 $ns2 dead:beef:1::1 0 0 0 slow
+		chk_join_nr "single address IPv6" 1 1 1
+		chk_add_nr 1 1
+	fi
 
 	# single address IPv6, remove
-	reset
-	pm_nl_set_limits $ns1 0 1
-	pm_nl_add_endpoint $ns1 dead:beef:2::1 flags signal
-	pm_nl_set_limits $ns2 1 1
-	run_tests $ns1 $ns2 dead:beef:1::1 0 -1 0 slow
-	chk_join_nr "remove single address IPv6" 1 1 1
-	chk_add_nr 1 1
-	chk_rm_nr 1 1 invert
+	if reset; then
+		pm_nl_set_limits $ns1 0 1
+		pm_nl_add_endpoint $ns1 dead:beef:2::1 flags signal
+		pm_nl_set_limits $ns2 1 1
+		run_tests $ns1 $ns2 dead:beef:1::1 0 -1 0 slow
+		chk_join_nr "remove single address IPv6" 1 1 1
+		chk_add_nr 1 1
+		chk_rm_nr 1 1 invert
+	fi
 
 	# subflow and signal IPv6, remove
-	reset
-	pm_nl_set_limits $ns1 0 2
-	pm_nl_add_endpoint $ns1 dead:beef:2::1 flags signal
-	pm_nl_set_limits $ns2 1 2
-	pm_nl_add_endpoint $ns2 dead:beef:3::2 dev ns2eth3 flags subflow
-	run_tests $ns1 $ns2 dead:beef:1::1 0 -1 -1 slow
-	chk_join_nr "remove subflow and signal IPv6" 2 2 2
-	chk_add_nr 1 1
-	chk_rm_nr 1 1
+	if reset; then
+		pm_nl_set_limits $ns1 0 2
+		pm_nl_add_endpoint $ns1 dead:beef:2::1 flags signal
+		pm_nl_set_limits $ns2 1 2
+		pm_nl_add_endpoint $ns2 dead:beef:3::2 dev ns2eth3 flags subflow
+		run_tests $ns1 $ns2 dead:beef:1::1 0 -1 -1 slow
+		chk_join_nr "remove subflow and signal IPv6" 2 2 2
+		chk_add_nr 1 1
+		chk_rm_nr 1 1
+	fi
 }
 
 v4mapped_tests()
 {
 	# subflow IPv4-mapped to IPv4-mapped
-	reset
-	pm_nl_set_limits $ns1 0 1
-	pm_nl_set_limits $ns2 0 1
-	pm_nl_add_endpoint $ns2 "::ffff:10.0.3.2" flags subflow
-	run_tests $ns1 $ns2 "::ffff:10.0.1.1"
-	chk_join_nr "single subflow IPv4-mapped" 1 1 1
+	if reset; then
+		pm_nl_set_limits $ns1 0 1
+		pm_nl_set_limits $ns2 0 1
+		pm_nl_add_endpoint $ns2 "::ffff:10.0.3.2" flags subflow
+		run_tests $ns1 $ns2 "::ffff:10.0.1.1"
+		chk_join_nr "single subflow IPv4-mapped" 1 1 1
+	fi
 
 	# signal address IPv4-mapped with IPv4-mapped sk
-	reset
-	pm_nl_set_limits $ns1 0 1
-	pm_nl_set_limits $ns2 1 1
-	pm_nl_add_endpoint $ns1 "::ffff:10.0.2.1" flags signal
-	run_tests $ns1 $ns2 "::ffff:10.0.1.1"
-	chk_join_nr "signal address IPv4-mapped" 1 1 1
-	chk_add_nr 1 1
+	if reset; then
+		pm_nl_set_limits $ns1 0 1
+		pm_nl_set_limits $ns2 1 1
+		pm_nl_add_endpoint $ns1 "::ffff:10.0.2.1" flags signal
+		run_tests $ns1 $ns2 "::ffff:10.0.1.1"
+		chk_join_nr "signal address IPv4-mapped" 1 1 1
+		chk_add_nr 1 1
+	fi
 
 	# subflow v4-map-v6
-	reset
-	pm_nl_set_limits $ns1 0 1
-	pm_nl_set_limits $ns2 0 1
-	pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
-	run_tests $ns1 $ns2 "::ffff:10.0.1.1"
-	chk_join_nr "single subflow v4-map-v6" 1 1 1
+	if reset; then
+		pm_nl_set_limits $ns1 0 1
+		pm_nl_set_limits $ns2 0 1
+		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
+		run_tests $ns1 $ns2 "::ffff:10.0.1.1"
+		chk_join_nr "single subflow v4-map-v6" 1 1 1
+	fi
 
 	# signal address v4-map-v6
-	reset
-	pm_nl_set_limits $ns1 0 1
-	pm_nl_set_limits $ns2 1 1
-	pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
-	run_tests $ns1 $ns2 "::ffff:10.0.1.1"
-	chk_join_nr "signal address v4-map-v6" 1 1 1
-	chk_add_nr 1 1
+	if reset; then
+		pm_nl_set_limits $ns1 0 1
+		pm_nl_set_limits $ns2 1 1
+		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
+		run_tests $ns1 $ns2 "::ffff:10.0.1.1"
+		chk_join_nr "signal address v4-map-v6" 1 1 1
+		chk_add_nr 1 1
+	fi
 
 	# subflow v6-map-v4
-	reset
-	pm_nl_set_limits $ns1 0 1
-	pm_nl_set_limits $ns2 0 1
-	pm_nl_add_endpoint $ns2 "::ffff:10.0.3.2" flags subflow
-	run_tests $ns1 $ns2 10.0.1.1
-	chk_join_nr "single subflow v6-map-v4" 1 1 1
+	if reset; then
+		pm_nl_set_limits $ns1 0 1
+		pm_nl_set_limits $ns2 0 1
+		pm_nl_add_endpoint $ns2 "::ffff:10.0.3.2" flags subflow
+		run_tests $ns1 $ns2 10.0.1.1
+		chk_join_nr "single subflow v6-map-v4" 1 1 1
+	fi
 
 	# signal address v6-map-v4
-	reset
-	pm_nl_set_limits $ns1 0 1
-	pm_nl_set_limits $ns2 1 1
-	pm_nl_add_endpoint $ns1 "::ffff:10.0.2.1" flags signal
-	run_tests $ns1 $ns2 10.0.1.1
-	chk_join_nr "signal address v6-map-v4" 1 1 1
-	chk_add_nr 1 1
+	if reset; then
+		pm_nl_set_limits $ns1 0 1
+		pm_nl_set_limits $ns2 1 1
+		pm_nl_add_endpoint $ns1 "::ffff:10.0.2.1" flags signal
+		run_tests $ns1 $ns2 10.0.1.1
+		chk_join_nr "signal address v6-map-v4" 1 1 1
+		chk_add_nr 1 1
+	fi
 
 	# no subflow IPv6 to v4 address
-	reset
-	pm_nl_set_limits $ns1 0 1
-	pm_nl_set_limits $ns2 0 1
-	pm_nl_add_endpoint $ns2 dead:beef:2::2 flags subflow
-	run_tests $ns1 $ns2 10.0.1.1
-	chk_join_nr "no JOIN with diff families v4-v6" 0 0 0
+	if reset; then
+		pm_nl_set_limits $ns1 0 1
+		pm_nl_set_limits $ns2 0 1
+		pm_nl_add_endpoint $ns2 dead:beef:2::2 flags subflow
+		run_tests $ns1 $ns2 10.0.1.1
+		chk_join_nr "no JOIN with diff families v4-v6" 0 0 0
+	fi
 
 	# no subflow IPv6 to v4 address even if v6 has a valid v4 at the end
-	reset
-	pm_nl_set_limits $ns1 0 1
-	pm_nl_set_limits $ns2 0 1
-	pm_nl_add_endpoint $ns2 dead:beef:2::10.0.3.2 flags subflow
-	run_tests $ns1 $ns2 10.0.1.1
-	chk_join_nr "no JOIN with diff families v4-v6-2" 0 0 0
+	if reset; then
+		pm_nl_set_limits $ns1 0 1
+		pm_nl_set_limits $ns2 0 1
+		pm_nl_add_endpoint $ns2 dead:beef:2::10.0.3.2 flags subflow
+		run_tests $ns1 $ns2 10.0.1.1
+		chk_join_nr "no JOIN with diff families v4-v6-2" 0 0 0
+	fi
 
 	# no subflow IPv4 to v6 address, no need to slow down too then
-	reset
-	pm_nl_set_limits $ns1 0 1
-	pm_nl_set_limits $ns2 0 1
-	pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
-	run_tests $ns1 $ns2 dead:beef:1::1
-	chk_join_nr "no JOIN with diff families v6-v4" 0 0 0
+	if reset; then
+		pm_nl_set_limits $ns1 0 1
+		pm_nl_set_limits $ns2 0 1
+		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
+		run_tests $ns1 $ns2 dead:beef:1::1
+		chk_join_nr "no JOIN with diff families v6-v4" 0 0 0
+	fi
 }
 
 backup_tests()
 {
 	# single subflow, backup
-	reset
-	pm_nl_set_limits $ns1 0 1
-	pm_nl_set_limits $ns2 0 1
-	pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow,backup
-	run_tests $ns1 $ns2 10.0.1.1 0 0 0 slow nobackup
-	chk_join_nr "single subflow, backup" 1 1 1
-	chk_prio_nr 0 1
+	if reset; then
+		pm_nl_set_limits $ns1 0 1
+		pm_nl_set_limits $ns2 0 1
+		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow,backup
+		run_tests $ns1 $ns2 10.0.1.1 0 0 0 slow nobackup
+		chk_join_nr "single subflow, backup" 1 1 1
+		chk_prio_nr 0 1
+	fi
 
 	# single address, backup
-	reset
-	pm_nl_set_limits $ns1 0 1
-	pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
-	pm_nl_set_limits $ns2 1 1
-	run_tests $ns1 $ns2 10.0.1.1 0 0 0 slow backup
-	chk_join_nr "single address, backup" 1 1 1
-	chk_add_nr 1 1
-	chk_prio_nr 1 1
+	if reset; then
+		pm_nl_set_limits $ns1 0 1
+		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
+		pm_nl_set_limits $ns2 1 1
+		run_tests $ns1 $ns2 10.0.1.1 0 0 0 slow backup
+		chk_join_nr "single address, backup" 1 1 1
+		chk_add_nr 1 1
+		chk_prio_nr 1 1
+	fi
 
 	# single address with port, backup
-	reset
-	pm_nl_set_limits $ns1 0 1
-	pm_nl_add_endpoint $ns1 10.0.2.1 flags signal port 10100
-	pm_nl_set_limits $ns2 1 1
-	run_tests $ns1 $ns2 10.0.1.1 0 0 0 slow backup
-	chk_join_nr "single address with port, backup" 1 1 1
-	chk_add_nr 1 1
-	chk_prio_nr 1 1
+	if reset; then
+		pm_nl_set_limits $ns1 0 1
+		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal port 10100
+		pm_nl_set_limits $ns2 1 1
+		run_tests $ns1 $ns2 10.0.1.1 0 0 0 slow backup
+		chk_join_nr "single address with port, backup" 1 1 1
+		chk_add_nr 1 1
+		chk_prio_nr 1 1
+	fi
 }
 
 add_addr_ports_tests()
 {
 	# signal address with port
-	reset
-	pm_nl_set_limits $ns1 0 1
-	pm_nl_set_limits $ns2 1 1
-	pm_nl_add_endpoint $ns1 10.0.2.1 flags signal port 10100
-	run_tests $ns1 $ns2 10.0.1.1
-	chk_join_nr "signal address with port" 1 1 1
-	chk_add_nr 1 1 1
+	if reset; then
+		pm_nl_set_limits $ns1 0 1
+		pm_nl_set_limits $ns2 1 1
+		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal port 10100
+		run_tests $ns1 $ns2 10.0.1.1
+		chk_join_nr "signal address with port" 1 1 1
+		chk_add_nr 1 1 1
+	fi
 
 	# subflow and signal with port
-	reset
-	pm_nl_add_endpoint $ns1 10.0.2.1 flags signal port 10100
-	pm_nl_set_limits $ns1 0 2
-	pm_nl_set_limits $ns2 1 2
-	pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
-	run_tests $ns1 $ns2 10.0.1.1
-	chk_join_nr "subflow and signal with port" 2 2 2
-	chk_add_nr 1 1 1
+	if reset; then
+		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal port 10100
+		pm_nl_set_limits $ns1 0 2
+		pm_nl_set_limits $ns2 1 2
+		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
+		run_tests $ns1 $ns2 10.0.1.1
+		chk_join_nr "subflow and signal with port" 2 2 2
+		chk_add_nr 1 1 1
+	fi
 
 	# single address with port, remove
-	reset
-	pm_nl_set_limits $ns1 0 1
-	pm_nl_add_endpoint $ns1 10.0.2.1 flags signal port 10100
-	pm_nl_set_limits $ns2 1 1
-	run_tests $ns1 $ns2 10.0.1.1 0 -1 0 slow
-	chk_join_nr "remove single address with port" 1 1 1
-	chk_add_nr 1 1 1
-	chk_rm_nr 1 1 invert
+	if reset; then
+		pm_nl_set_limits $ns1 0 1
+		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal port 10100
+		pm_nl_set_limits $ns2 1 1
+		run_tests $ns1 $ns2 10.0.1.1 0 -1 0 slow
+		chk_join_nr "remove single address with port" 1 1 1
+		chk_add_nr 1 1 1
+		chk_rm_nr 1 1 invert
+	fi
 
 	# subflow and signal with port, remove
-	reset
-	pm_nl_set_limits $ns1 0 2
-	pm_nl_add_endpoint $ns1 10.0.2.1 flags signal port 10100
-	pm_nl_set_limits $ns2 1 2
-	pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
-	run_tests $ns1 $ns2 10.0.1.1 0 -1 -1 slow
-	chk_join_nr "remove subflow and signal with port" 2 2 2
-	chk_add_nr 1 1 1
-	chk_rm_nr 1 1
+	if reset; then
+		pm_nl_set_limits $ns1 0 2
+		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal port 10100
+		pm_nl_set_limits $ns2 1 2
+		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
+		run_tests $ns1 $ns2 10.0.1.1 0 -1 -1 slow
+		chk_join_nr "remove subflow and signal with port" 2 2 2
+		chk_add_nr 1 1 1
+		chk_rm_nr 1 1
+	fi
 
 	# subflows and signal with port, flush
-	reset
-	pm_nl_set_limits $ns1 0 3
-	pm_nl_add_endpoint $ns1 10.0.2.1 flags signal port 10100
-	pm_nl_set_limits $ns2 1 3
-	pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
-	pm_nl_add_endpoint $ns2 10.0.4.2 flags subflow
-	run_tests $ns1 $ns2 10.0.1.1 0 -8 -2 slow
-	chk_join_nr "flush subflows and signal with port" 3 3 3
-	chk_add_nr 1 1
-	chk_rm_nr 1 3 invert simult
+	if reset; then
+		pm_nl_set_limits $ns1 0 3
+		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal port 10100
+		pm_nl_set_limits $ns2 1 3
+		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
+		pm_nl_add_endpoint $ns2 10.0.4.2 flags subflow
+		run_tests $ns1 $ns2 10.0.1.1 0 -8 -2 slow
+		chk_join_nr "flush subflows and signal with port" 3 3 3
+		chk_add_nr 1 1
+		chk_rm_nr 1 3 invert simult
+	fi
 
 	# multiple addresses with port
-	reset
-	pm_nl_set_limits $ns1 2 2
-	pm_nl_add_endpoint $ns1 10.0.2.1 flags signal port 10100
-	pm_nl_add_endpoint $ns1 10.0.3.1 flags signal port 10100
-	pm_nl_set_limits $ns2 2 2
-	run_tests $ns1 $ns2 10.0.1.1
-	chk_join_nr "multiple addresses with port" 2 2 2
-	chk_add_nr 2 2 2
+	if reset; then
+		pm_nl_set_limits $ns1 2 2
+		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal port 10100
+		pm_nl_add_endpoint $ns1 10.0.3.1 flags signal port 10100
+		pm_nl_set_limits $ns2 2 2
+		run_tests $ns1 $ns2 10.0.1.1
+		chk_join_nr "multiple addresses with port" 2 2 2
+		chk_add_nr 2 2 2
+	fi
 
 	# multiple addresses with ports
-	reset
-	pm_nl_set_limits $ns1 2 2
-	pm_nl_add_endpoint $ns1 10.0.2.1 flags signal port 10100
-	pm_nl_add_endpoint $ns1 10.0.3.1 flags signal port 10101
-	pm_nl_set_limits $ns2 2 2
-	run_tests $ns1 $ns2 10.0.1.1
-	chk_join_nr "multiple addresses with ports" 2 2 2
-	chk_add_nr 2 2 2
+	if reset; then
+		pm_nl_set_limits $ns1 2 2
+		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal port 10100
+		pm_nl_add_endpoint $ns1 10.0.3.1 flags signal port 10101
+		pm_nl_set_limits $ns2 2 2
+		run_tests $ns1 $ns2 10.0.1.1
+		chk_join_nr "multiple addresses with ports" 2 2 2
+		chk_add_nr 2 2 2
+	fi
 }
 
 syncookies_tests()
 {
 	# single subflow, syncookies
-	reset_with_cookies
-	pm_nl_set_limits $ns1 0 1
-	pm_nl_set_limits $ns2 0 1
-	pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
-	run_tests $ns1 $ns2 10.0.1.1
-	chk_join_nr "single subflow with syn cookies" 1 1 1
+	if reset_with_cookies; then
+		pm_nl_set_limits $ns1 0 1
+		pm_nl_set_limits $ns2 0 1
+		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
+		run_tests $ns1 $ns2 10.0.1.1
+		chk_join_nr "single subflow with syn cookies" 1 1 1
+	fi
 
 	# multiple subflows with syn cookies
-	reset_with_cookies
-	pm_nl_set_limits $ns1 0 2
-	pm_nl_set_limits $ns2 0 2
-	pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
-	pm_nl_add_endpoint $ns2 10.0.2.2 flags subflow
-	run_tests $ns1 $ns2 10.0.1.1
-	chk_join_nr "multiple subflows with syn cookies" 2 2 2
+	if reset_with_cookies; then
+		pm_nl_set_limits $ns1 0 2
+		pm_nl_set_limits $ns2 0 2
+		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
+		pm_nl_add_endpoint $ns2 10.0.2.2 flags subflow
+		run_tests $ns1 $ns2 10.0.1.1
+		chk_join_nr "multiple subflows with syn cookies" 2 2 2
+	fi
 
 	# multiple subflows limited by server
-	reset_with_cookies
-	pm_nl_set_limits $ns1 0 1
-	pm_nl_set_limits $ns2 0 2
-	pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
-	pm_nl_add_endpoint $ns2 10.0.2.2 flags subflow
-	run_tests $ns1 $ns2 10.0.1.1
-	chk_join_nr "subflows limited by server w cookies" 2 1 1
+	if reset_with_cookies; then
+		pm_nl_set_limits $ns1 0 1
+		pm_nl_set_limits $ns2 0 2
+		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
+		pm_nl_add_endpoint $ns2 10.0.2.2 flags subflow
+		run_tests $ns1 $ns2 10.0.1.1
+		chk_join_nr "subflows limited by server w cookies" 2 1 1
+	fi
 
 	# test signal address with cookies
-	reset_with_cookies
-	pm_nl_set_limits $ns1 0 1
-	pm_nl_set_limits $ns2 1 1
-	pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
-	run_tests $ns1 $ns2 10.0.1.1
-	chk_join_nr "signal address with syn cookies" 1 1 1
-	chk_add_nr 1 1
+	if reset_with_cookies; then
+		pm_nl_set_limits $ns1 0 1
+		pm_nl_set_limits $ns2 1 1
+		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
+		run_tests $ns1 $ns2 10.0.1.1
+		chk_join_nr "signal address with syn cookies" 1 1 1
+		chk_add_nr 1 1
+	fi
 
 	# test cookie with subflow and signal
-	reset_with_cookies
-	pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
-	pm_nl_set_limits $ns1 0 2
-	pm_nl_set_limits $ns2 1 2
-	pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
-	run_tests $ns1 $ns2 10.0.1.1
-	chk_join_nr "subflow and signal w cookies" 2 2 2
-	chk_add_nr 1 1
+	if reset_with_cookies; then
+		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
+		pm_nl_set_limits $ns1 0 2
+		pm_nl_set_limits $ns2 1 2
+		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
+		run_tests $ns1 $ns2 10.0.1.1
+		chk_join_nr "subflow and signal w cookies" 2 2 2
+		chk_add_nr 1 1
+	fi
 
 	# accept and use add_addr with additional subflows
-	reset_with_cookies
-	pm_nl_set_limits $ns1 0 3
-	pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
-	pm_nl_set_limits $ns2 1 3
-	pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
-	pm_nl_add_endpoint $ns2 10.0.4.2 flags subflow
-	run_tests $ns1 $ns2 10.0.1.1
-	chk_join_nr "subflows and signal w. cookies" 3 3 3
-	chk_add_nr 1 1
+	if reset_with_cookies; then
+		pm_nl_set_limits $ns1 0 3
+		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
+		pm_nl_set_limits $ns2 1 3
+		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
+		pm_nl_add_endpoint $ns2 10.0.4.2 flags subflow
+		run_tests $ns1 $ns2 10.0.1.1
+		chk_join_nr "subflows and signal w. cookies" 3 3 3
+		chk_add_nr 1 1
+	fi
 }
 
 checksum_tests()
 {
 	# checksum test 0 0
-	reset_with_checksum 0 0
-	pm_nl_set_limits $ns1 0 1
-	pm_nl_set_limits $ns2 0 1
-	run_tests $ns1 $ns2 10.0.1.1
-	chk_csum_nr "checksum test 0 0"
+	if reset_with_checksum 0 0; then
+		pm_nl_set_limits $ns1 0 1
+		pm_nl_set_limits $ns2 0 1
+		run_tests $ns1 $ns2 10.0.1.1
+		chk_csum_nr "checksum test 0 0"
+	fi
 
 	# checksum test 1 1
-	reset_with_checksum 1 1
-	pm_nl_set_limits $ns1 0 1
-	pm_nl_set_limits $ns2 0 1
-	run_tests $ns1 $ns2 10.0.1.1
-	chk_csum_nr "checksum test 1 1"
+	if reset_with_checksum 1 1; then
+		pm_nl_set_limits $ns1 0 1
+		pm_nl_set_limits $ns2 0 1
+		run_tests $ns1 $ns2 10.0.1.1
+		chk_csum_nr "checksum test 1 1"
+	fi
 
 	# checksum test 0 1
-	reset_with_checksum 0 1
-	pm_nl_set_limits $ns1 0 1
-	pm_nl_set_limits $ns2 0 1
-	run_tests $ns1 $ns2 10.0.1.1
-	chk_csum_nr "checksum test 0 1"
+	if reset_with_checksum 0 1; then
+		pm_nl_set_limits $ns1 0 1
+		pm_nl_set_limits $ns2 0 1
+		run_tests $ns1 $ns2 10.0.1.1
+		chk_csum_nr "checksum test 0 1"
+	fi
 
 	# checksum test 1 0
-	reset_with_checksum 1 0
-	pm_nl_set_limits $ns1 0 1
-	pm_nl_set_limits $ns2 0 1
-	run_tests $ns1 $ns2 10.0.1.1
-	chk_csum_nr "checksum test 1 0"
+	if reset_with_checksum 1 0; then
+		pm_nl_set_limits $ns1 0 1
+		pm_nl_set_limits $ns2 0 1
+		run_tests $ns1 $ns2 10.0.1.1
+		chk_csum_nr "checksum test 1 0"
+	fi
 }
 
 deny_join_id0_tests()
 {
 	# subflow allow join id0 ns1
-	reset_with_allow_join_id0 1 0
-	pm_nl_set_limits $ns1 1 1
-	pm_nl_set_limits $ns2 1 1
-	pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
-	run_tests $ns1 $ns2 10.0.1.1
-	chk_join_nr "single subflow allow join id0 ns1" 1 1 1
+	if reset_with_allow_join_id0 1 0; then
+		pm_nl_set_limits $ns1 1 1
+		pm_nl_set_limits $ns2 1 1
+		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
+		run_tests $ns1 $ns2 10.0.1.1
+		chk_join_nr "single subflow allow join id0 ns1" 1 1 1
+	fi
 
 	# subflow allow join id0 ns2
-	reset_with_allow_join_id0 0 1
-	pm_nl_set_limits $ns1 1 1
-	pm_nl_set_limits $ns2 1 1
-	pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
-	run_tests $ns1 $ns2 10.0.1.1
-	chk_join_nr "single subflow allow join id0 ns2" 0 0 0
+	if reset_with_allow_join_id0 0 1; then
+		pm_nl_set_limits $ns1 1 1
+		pm_nl_set_limits $ns2 1 1
+		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
+		run_tests $ns1 $ns2 10.0.1.1
+		chk_join_nr "single subflow allow join id0 ns2" 0 0 0
+	fi
 
 	# signal address allow join id0 ns1
 	# ADD_ADDRs are not affected by allow_join_id0 value.
-	reset_with_allow_join_id0 1 0
-	pm_nl_set_limits $ns1 1 1
-	pm_nl_set_limits $ns2 1 1
-	pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
-	run_tests $ns1 $ns2 10.0.1.1
-	chk_join_nr "signal address allow join id0 ns1" 1 1 1
-	chk_add_nr 1 1
+	if reset_with_allow_join_id0 1 0; then
+		pm_nl_set_limits $ns1 1 1
+		pm_nl_set_limits $ns2 1 1
+		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
+		run_tests $ns1 $ns2 10.0.1.1
+		chk_join_nr "signal address allow join id0 ns1" 1 1 1
+		chk_add_nr 1 1
+	fi
 
 	# signal address allow join id0 ns2
 	# ADD_ADDRs are not affected by allow_join_id0 value.
-	reset_with_allow_join_id0 0 1
-	pm_nl_set_limits $ns1 1 1
-	pm_nl_set_limits $ns2 1 1
-	pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
-	run_tests $ns1 $ns2 10.0.1.1
-	chk_join_nr "signal address allow join id0 ns2" 1 1 1
-	chk_add_nr 1 1
+	if reset_with_allow_join_id0 0 1; then
+		pm_nl_set_limits $ns1 1 1
+		pm_nl_set_limits $ns2 1 1
+		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
+		run_tests $ns1 $ns2 10.0.1.1
+		chk_join_nr "signal address allow join id0 ns2" 1 1 1
+		chk_add_nr 1 1
+	fi
 
 	# subflow and address allow join id0 ns1
-	reset_with_allow_join_id0 1 0
-	pm_nl_set_limits $ns1 2 2
-	pm_nl_set_limits $ns2 2 2
-	pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
-	pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
-	run_tests $ns1 $ns2 10.0.1.1
-	chk_join_nr "subflow and address allow join id0 1" 2 2 2
+	if reset_with_allow_join_id0 1 0; then
+		pm_nl_set_limits $ns1 2 2
+		pm_nl_set_limits $ns2 2 2
+		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
+		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
+		run_tests $ns1 $ns2 10.0.1.1
+		chk_join_nr "subflow and address allow join id0 1" 2 2 2
+	fi
 
 	# subflow and address allow join id0 ns2
-	reset_with_allow_join_id0 0 1
-	pm_nl_set_limits $ns1 2 2
-	pm_nl_set_limits $ns2 2 2
-	pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
-	pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
-	run_tests $ns1 $ns2 10.0.1.1
-	chk_join_nr "subflow and address allow join id0 2" 1 1 1
+	if reset_with_allow_join_id0 0 1; then
+		pm_nl_set_limits $ns1 2 2
+		pm_nl_set_limits $ns2 2 2
+		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
+		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
+		run_tests $ns1 $ns2 10.0.1.1
+		chk_join_nr "subflow and address allow join id0 2" 1 1 1
+	fi
 }
 
 fullmesh_tests()
@@ -2364,95 +2468,104 @@ fullmesh_tests()
 	# fullmesh 1
 	# 2 fullmesh addrs in ns2, added before the connection,
 	# 1 non-fullmesh addr in ns1, added during the connection.
-	reset
-	pm_nl_set_limits $ns1 0 4
-	pm_nl_set_limits $ns2 1 4
-	pm_nl_add_endpoint $ns2 10.0.2.2 flags subflow,fullmesh
-	pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow,fullmesh
-	run_tests $ns1 $ns2 10.0.1.1 0 1 0 slow
-	chk_join_nr "fullmesh test 2x1" 4 4 4
-	chk_add_nr 1 1
+	if reset; then
+		pm_nl_set_limits $ns1 0 4
+		pm_nl_set_limits $ns2 1 4
+		pm_nl_add_endpoint $ns2 10.0.2.2 flags subflow,fullmesh
+		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow,fullmesh
+		run_tests $ns1 $ns2 10.0.1.1 0 1 0 slow
+		chk_join_nr "fullmesh test 2x1" 4 4 4
+		chk_add_nr 1 1
+	fi
 
 	# fullmesh 2
 	# 1 non-fullmesh addr in ns1, added before the connection,
 	# 1 fullmesh addr in ns2, added during the connection.
-	reset
-	pm_nl_set_limits $ns1 1 3
-	pm_nl_set_limits $ns2 1 3
-	pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
-	run_tests $ns1 $ns2 10.0.1.1 0 0 fullmesh_1 slow
-	chk_join_nr "fullmesh test 1x1" 3 3 3
-	chk_add_nr 1 1
+	if reset; then
+		pm_nl_set_limits $ns1 1 3
+		pm_nl_set_limits $ns2 1 3
+		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
+		run_tests $ns1 $ns2 10.0.1.1 0 0 fullmesh_1 slow
+		chk_join_nr "fullmesh test 1x1" 3 3 3
+		chk_add_nr 1 1
+	fi
 
 	# fullmesh 3
 	# 1 non-fullmesh addr in ns1, added before the connection,
 	# 2 fullmesh addrs in ns2, added during the connection.
-	reset
-	pm_nl_set_limits $ns1 2 5
-	pm_nl_set_limits $ns2 1 5
-	pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
-	run_tests $ns1 $ns2 10.0.1.1 0 0 fullmesh_2 slow
-	chk_join_nr "fullmesh test 1x2" 5 5 5
-	chk_add_nr 1 1
+	if reset; then
+		pm_nl_set_limits $ns1 2 5
+		pm_nl_set_limits $ns2 1 5
+		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
+		run_tests $ns1 $ns2 10.0.1.1 0 0 fullmesh_2 slow
+		chk_join_nr "fullmesh test 1x2" 5 5 5
+		chk_add_nr 1 1
+	fi
 
 	# fullmesh 4
 	# 1 non-fullmesh addr in ns1, added before the connection,
 	# 2 fullmesh addrs in ns2, added during the connection,
 	# limit max_subflows to 4.
-	reset
-	pm_nl_set_limits $ns1 2 4
-	pm_nl_set_limits $ns2 1 4
-	pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
-	run_tests $ns1 $ns2 10.0.1.1 0 0 fullmesh_2 slow
-	chk_join_nr "fullmesh test 1x2, limited" 4 4 4
-	chk_add_nr 1 1
+	if reset; then
+		pm_nl_set_limits $ns1 2 4
+		pm_nl_set_limits $ns2 1 4
+		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
+		run_tests $ns1 $ns2 10.0.1.1 0 0 fullmesh_2 slow
+		chk_join_nr "fullmesh test 1x2, limited" 4 4 4
+		chk_add_nr 1 1
+	fi
 
 	# set fullmesh flag
-	reset
-	pm_nl_set_limits $ns1 4 4
-	pm_nl_add_endpoint $ns1 10.0.2.1 flags subflow
-	pm_nl_set_limits $ns2 4 4
-	run_tests $ns1 $ns2 10.0.1.1 0 0 1 slow fullmesh
-	chk_join_nr "set fullmesh flag test" 2 2 2
-	chk_rm_nr 0 1
+	if reset; then
+		pm_nl_set_limits $ns1 4 4
+		pm_nl_add_endpoint $ns1 10.0.2.1 flags subflow
+		pm_nl_set_limits $ns2 4 4
+		run_tests $ns1 $ns2 10.0.1.1 0 0 1 slow fullmesh
+		chk_join_nr "set fullmesh flag test" 2 2 2
+		chk_rm_nr 0 1
+	fi
 
 	# set nofullmesh flag
-	reset
-	pm_nl_set_limits $ns1 4 4
-	pm_nl_add_endpoint $ns1 10.0.2.1 flags subflow,fullmesh
-	pm_nl_set_limits $ns2 4 4
-	run_tests $ns1 $ns2 10.0.1.1 0 0 fullmesh_1 slow nofullmesh
-	chk_join_nr "set nofullmesh flag test" 2 2 2
-	chk_rm_nr 0 1
+	if reset; then
+		pm_nl_set_limits $ns1 4 4
+		pm_nl_add_endpoint $ns1 10.0.2.1 flags subflow,fullmesh
+		pm_nl_set_limits $ns2 4 4
+		run_tests $ns1 $ns2 10.0.1.1 0 0 fullmesh_1 slow nofullmesh
+		chk_join_nr "set nofullmesh flag test" 2 2 2
+		chk_rm_nr 0 1
+	fi
 
 	# set backup,fullmesh flags
-	reset
-	pm_nl_set_limits $ns1 4 4
-	pm_nl_add_endpoint $ns1 10.0.2.1 flags subflow
-	pm_nl_set_limits $ns2 4 4
-	run_tests $ns1 $ns2 10.0.1.1 0 0 1 slow backup,fullmesh
-	chk_join_nr "set backup,fullmesh flags test" 2 2 2
-	chk_prio_nr 0 1
-	chk_rm_nr 0 1
+	if reset; then
+		pm_nl_set_limits $ns1 4 4
+		pm_nl_add_endpoint $ns1 10.0.2.1 flags subflow
+		pm_nl_set_limits $ns2 4 4
+		run_tests $ns1 $ns2 10.0.1.1 0 0 1 slow backup,fullmesh
+		chk_join_nr "set backup,fullmesh flags test" 2 2 2
+		chk_prio_nr 0 1
+		chk_rm_nr 0 1
+	fi
 
 	# set nobackup,nofullmesh flags
-	reset
-	pm_nl_set_limits $ns1 4 4
-	pm_nl_set_limits $ns2 4 4
-	pm_nl_add_endpoint $ns2 10.0.2.2 flags subflow,backup,fullmesh
-	run_tests $ns1 $ns2 10.0.1.1 0 0 0 slow nobackup,nofullmesh
-	chk_join_nr "set nobackup,nofullmesh flags test" 2 2 2
-	chk_prio_nr 0 1
-	chk_rm_nr 0 1
+	if reset; then
+		pm_nl_set_limits $ns1 4 4
+		pm_nl_set_limits $ns2 4 4
+		pm_nl_add_endpoint $ns2 10.0.2.2 flags subflow,backup,fullmesh
+		run_tests $ns1 $ns2 10.0.1.1 0 0 0 slow nobackup,nofullmesh
+		chk_join_nr "set nobackup,nofullmesh flags test" 2 2 2
+		chk_prio_nr 0 1
+		chk_rm_nr 0 1
+	fi
 }
 
 fastclose_tests()
 {
-	reset
-	run_tests $ns1 $ns2 10.0.1.1 1024 0 fastclose_2
-	chk_join_nr "fastclose test" 0 0 0
-	chk_fclose_nr 1 1
-	chk_rst_nr 1 1 invert
+	if reset; then
+		run_tests $ns1 $ns2 10.0.1.1 1024 0 fastclose_2
+		chk_join_nr "fastclose test" 0 0 0
+		chk_fclose_nr 1 1
+		chk_rst_nr 1 1 invert
+	fi
 }
 
 pedit_action_pkts()
@@ -2464,115 +2577,114 @@ pedit_action_pkts()
 fail_tests()
 {
 	# multiple subflows
-	reset_with_fail 2
-	tc -n $ns2 qdisc add dev ns2eth1 root netem rate 20mbit delay 1
-	pm_nl_set_limits $ns1 0 1
-	pm_nl_set_limits $ns2 0 1
-	pm_nl_add_endpoint $ns2 10.0.2.2 dev ns2eth2 flags subflow
-	run_tests $ns1 $ns2 10.0.1.1 1024
-	chk_join_nr "MP_FAIL MP_RST: $(pedit_action_pkts) corrupted pkts" 1 1 1 \
-									  +1 +0 \
-									  1 \
-									  1
+	if reset_with_fail 2; then
+		tc -n $ns2 qdisc add dev ns2eth1 root netem rate 20mbit delay 1
+		pm_nl_set_limits $ns1 0 1
+		pm_nl_set_limits $ns2 0 1
+		pm_nl_add_endpoint $ns2 10.0.2.2 dev ns2eth2 flags subflow
+		run_tests $ns1 $ns2 10.0.1.1 1024
+		chk_join_nr "MP_FAIL MP_RST: $(pedit_action_pkts) corrupted pkts" \
+			1 1 1 +1 +0 1 1
+	fi
 
 	# single subflow
-	reset_with_fail 1
-	run_tests $ns1 $ns2 10.0.1.1 128
-									# syn_nr syn_ack_nr ack_nr
-									# csum_ns1 csum_ns2
-									# fail_nr
-									# rst_nr
-									# infi_nr
-	chk_join_nr "Infinite map: $(pedit_action_pkts) corrupted pkts" 0 0 0 \
-									+1 +0 \
-									1 \
-									0 \
-									1
+	if reset_with_fail 1; then
+		run_tests $ns1 $ns2 10.0.1.1 128
+		chk_join_nr "Infinite map: $(pedit_action_pkts) corrupted pkts" \
+			0 0 0 +1 +0 1 0 1
+	fi
 }
 
 userspace_tests()
 {
 	# userspace pm type prevents add_addr
-	reset
-	set_userspace_pm $ns1
-	pm_nl_set_limits $ns1 0 2
-	pm_nl_set_limits $ns2 0 2
-	pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
-	run_tests $ns1 $ns2 10.0.1.1
-	chk_join_nr "userspace pm type prevents add_addr" 0 0 0
-	chk_add_nr 0 0
+	if reset; then
+		set_userspace_pm $ns1
+		pm_nl_set_limits $ns1 0 2
+		pm_nl_set_limits $ns2 0 2
+		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
+		run_tests $ns1 $ns2 10.0.1.1
+		chk_join_nr "userspace pm type prevents add_addr" 0 0 0
+		chk_add_nr 0 0
+	fi
 
 	# userspace pm type echoes add_addr
-	reset
-	set_userspace_pm $ns2
-	pm_nl_set_limits $ns1 0 2
-	pm_nl_set_limits $ns2 0 2
-	pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
-	run_tests $ns1 $ns2 10.0.1.1
-	chk_join_nr "userspace pm type echoes add_addr" 0 0 0
-	chk_add_nr 1 1
+	if reset; then
+		set_userspace_pm $ns2
+		pm_nl_set_limits $ns1 0 2
+		pm_nl_set_limits $ns2 0 2
+		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
+		run_tests $ns1 $ns2 10.0.1.1
+		chk_join_nr "userspace pm type echoes add_addr" 0 0 0
+		chk_add_nr 1 1
+	fi
 
 	# userspace pm type rejects join
-	reset
-	set_userspace_pm $ns1
-	pm_nl_set_limits $ns1 1 1
-	pm_nl_set_limits $ns2 1 1
-	pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
-	run_tests $ns1 $ns2 10.0.1.1
-	chk_join_nr "userspace pm type rejects join" 1 1 0
+	if reset; then
+		set_userspace_pm $ns1
+		pm_nl_set_limits $ns1 1 1
+		pm_nl_set_limits $ns2 1 1
+		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
+		run_tests $ns1 $ns2 10.0.1.1
+		chk_join_nr "userspace pm type rejects join" 1 1 0
+	fi
 
 	# userspace pm type does not send join
-	reset
-	set_userspace_pm $ns2
-	pm_nl_set_limits $ns1 1 1
-	pm_nl_set_limits $ns2 1 1
-	pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
-	run_tests $ns1 $ns2 10.0.1.1
-	chk_join_nr "userspace pm type does not send join" 0 0 0
+	if reset; then
+		set_userspace_pm $ns2
+		pm_nl_set_limits $ns1 1 1
+		pm_nl_set_limits $ns2 1 1
+		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
+		run_tests $ns1 $ns2 10.0.1.1
+		chk_join_nr "userspace pm type does not send join" 0 0 0
+	fi
 
 	# userspace pm type prevents mp_prio
-	reset
-	set_userspace_pm $ns1
-	pm_nl_set_limits $ns1 1 1
-	pm_nl_set_limits $ns2 1 1
-	pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
-	run_tests $ns1 $ns2 10.0.1.1 0 0 0 slow backup
-	chk_join_nr "userspace pm type prevents mp_prio" 1 1 0
-	chk_prio_nr 0 0
+	if reset; then
+		set_userspace_pm $ns1
+		pm_nl_set_limits $ns1 1 1
+		pm_nl_set_limits $ns2 1 1
+		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
+		run_tests $ns1 $ns2 10.0.1.1 0 0 0 slow backup
+		chk_join_nr "userspace pm type prevents mp_prio" 1 1 0
+		chk_prio_nr 0 0
+	fi
 
 	# userspace pm type prevents rm_addr
-	reset
-	set_userspace_pm $ns1
-	set_userspace_pm $ns2
-	pm_nl_set_limits $ns1 0 1
-	pm_nl_set_limits $ns2 0 1
-	pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
-	run_tests $ns1 $ns2 10.0.1.1 0 0 -1 slow
-	chk_join_nr "userspace pm type prevents rm_addr" 0 0 0
-	chk_rm_nr 0 0
+	if reset; then
+		set_userspace_pm $ns1
+		set_userspace_pm $ns2
+		pm_nl_set_limits $ns1 0 1
+		pm_nl_set_limits $ns2 0 1
+		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
+		run_tests $ns1 $ns2 10.0.1.1 0 0 -1 slow
+		chk_join_nr "userspace pm type prevents rm_addr" 0 0 0
+		chk_rm_nr 0 0
+	fi
 }
 
 implicit_tests()
 {
 	# userspace pm type prevents add_addr
-	reset
-	pm_nl_set_limits $ns1 2 2
-	pm_nl_set_limits $ns2 2 2
-	pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
-	run_tests $ns1 $ns2 10.0.1.1 0 0 0 slow &
+	if reset; then
+		pm_nl_set_limits $ns1 2 2
+		pm_nl_set_limits $ns2 2 2
+		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
+		run_tests $ns1 $ns2 10.0.1.1 0 0 0 slow &
 
-	wait_mpj $ns1
-	pm_nl_check_endpoint "implicit EP creation" \
-		$ns2 10.0.2.2 id 1 flags implicit
+		wait_mpj $ns1
+		pm_nl_check_endpoint "implicit EP creation" \
+			$ns2 10.0.2.2 id 1 flags implicit
 
-	pm_nl_add_endpoint $ns2 10.0.2.2 id 33
-	pm_nl_check_endpoint "implicit EP ID change is prevented" \
-		$ns2 10.0.2.2 id 1 flags implicit
+		pm_nl_add_endpoint $ns2 10.0.2.2 id 33
+		pm_nl_check_endpoint "implicit EP ID change is prevented" \
+			$ns2 10.0.2.2 id 1 flags implicit
 
-	pm_nl_add_endpoint $ns2 10.0.2.2 flags signal
-	pm_nl_check_endpoint "implicit EP modification is allowed" \
-		$ns2 10.0.2.2 id 1 flags signal
-	wait
+		pm_nl_add_endpoint $ns2 10.0.2.2 flags signal
+		pm_nl_check_endpoint "implicit EP modification is allowed" \
+			$ns2 10.0.2.2 id 1 flags signal
+		wait
+	fi
 }
 
 # [$1: error message]
@@ -2595,6 +2707,8 @@ usage()
 	echo "  -i use ip mptcp"
 	echo "  -h help"
 
+	echo "[test ids]"
+
 	exit ${ret}
 }
 
@@ -2657,6 +2771,16 @@ while getopts "${all_tests_args}cCih" opt; do
 	esac
 done
 
+shift $((OPTIND - 1))
+
+for arg in "${@}"; do
+	if [[ "${arg}" =~ ^[0-9]+$ ]]; then
+		only_tests+=("${arg}")
+	else
+		usage "Unknown argument: ${arg}"
+	fi
+done
+
 if [ ${#tests[@]} -eq 0 ]; then
 	tests=("${all_tests_names[@]}")
 fi
-- 
2.34.1

[PATCH mptcp-next v3 07/12] selftests: mptcp: join: alt. to exec specific tests

[Matthieu Baerts]

Running a specific test by giving the ID is often what we want: the CI
reports an issue with the Nth test, it is reproducible with:

  ./mptcp_join.sh N

But this might not work when there is a need to find which commit has
introduced a regression making a test unstable: failing from time to
time. Indeed, a specific test is not attached to one ID: the ID is in
fact a counter. It means the same test can have a different ID if other
tests have been added/removed before this unstable one.

Remembering the current test can also help listing failed tests at the
end.

Reviewed-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
---
 .../testing/selftests/net/mptcp/mptcp_join.sh | 473 +++++++++---------
 1 file changed, 245 insertions(+), 228 deletions(-)

diff --git a/tools/testing/selftests/net/mptcp/mptcp_join.sh b/tools/testing/selftests/net/mptcp/mptcp_join.sh
index b9d1b3508f1d..c12b1baef29e 100755
--- a/tools/testing/selftests/net/mptcp/mptcp_join.sh
+++ b/tools/testing/selftests/net/mptcp/mptcp_join.sh
@@ -20,8 +20,10 @@ validate_checksum=0
 init=0
 
 declare -A all_tests
-declare -a only_tests
+declare -a only_tests_ids
+declare -a only_tests_names
 TEST_COUNT=0
+TEST_NAME=""
 nr_blank=40
 
 export FAILING_LINKS=""
@@ -153,22 +155,30 @@ cleanup()
 
 skip_test()
 {
-	if [ "${#only_tests[@]}" -eq 0 ]; then
+	if [ "${#only_tests_ids[@]}" -eq 0 ] && [ "${#only_tests_names[@]}" -eq 0 ]; then
 		return 1
 	fi
 
 	local i
-	for i in "${only_tests[@]}"; do
+	for i in "${only_tests_ids[@]}"; do
 		if [ "${TEST_COUNT}" -eq "${i}" ]; then
 			return 1
 		fi
 	done
+	for i in "${only_tests_names[@]}"; do
+		if [ "${TEST_NAME}" = "${i}" ]; then
+			return 1
+		fi
+	done
 
 	return 0
 }
 
+# $1: test name
 reset()
 {
+	TEST_NAME="${1}"
+
 	TEST_COUNT=$((TEST_COUNT+1))
 
 	if skip_test; then
@@ -186,27 +196,29 @@ reset()
 	return 0
 }
 
+# $1: test name
 reset_with_cookies()
 {
-	reset || return 1
+	reset "${1}" || return 1
 
 	for netns in "$ns1" "$ns2";do
 		ip netns exec $netns sysctl -q net.ipv4.tcp_syncookies=2
 	done
 }
 
+# $1: test name
 reset_with_add_addr_timeout()
 {
-	local ip="${1:-4}"
+	local ip="${2:-4}"
 	local tables
 
+	reset "${1}" || return 1
+
 	tables="iptables"
 	if [ $ip -eq 6 ]; then
 		tables="ip6tables"
 	fi
 
-	reset || return 1
-
 	ip netns exec $ns1 sysctl -q net.mptcp.add_addr_timeout=1
 	ip netns exec $ns2 $tables -A OUTPUT -p tcp \
 		-m tcp --tcp-option 30 \
@@ -215,12 +227,13 @@ reset_with_add_addr_timeout()
 		-j DROP
 }
 
+# $1: test name
 reset_with_checksum()
 {
 	local ns1_enable=$1
 	local ns2_enable=$2
 
-	reset || return 1
+	reset "checksum test ${1} ${2}" || return 1
 
 	ip netns exec $ns1 sysctl -q net.mptcp.checksum_enabled=$ns1_enable
 	ip netns exec $ns2 sysctl -q net.mptcp.checksum_enabled=$ns2_enable
@@ -228,10 +241,10 @@ reset_with_checksum()
 
 reset_with_allow_join_id0()
 {
-	local ns1_enable=$1
-	local ns2_enable=$2
+	local ns1_enable=$2
+	local ns2_enable=$3
 
-	reset || return 1
+	reset "${1}" || return 1
 
 	ip netns exec $ns1 sysctl -q net.mptcp.allow_join_initial_addr_port=$ns1_enable
 	ip netns exec $ns2 sysctl -q net.mptcp.allow_join_initial_addr_port=$ns2_enable
@@ -255,15 +268,15 @@ reset_with_allow_join_id0()
 # Netfilter is used to mark packets with enough data.
 reset_with_fail()
 {
-	reset || return 1
+	reset "${1}" || return 1
 
 	ip netns exec $ns1 sysctl -q net.mptcp.checksum_enabled=1
 	ip netns exec $ns2 sysctl -q net.mptcp.checksum_enabled=1
 
 	check_invert=1
 	validate_checksum=1
-	local i="$1"
-	local ip="${2:-4}"
+	local i="$2"
+	local ip="${3:-4}"
 	local tables
 
 	tables="iptables"
@@ -949,8 +962,9 @@ chk_csum_nr()
 		csum_ns2=${csum_ns2:1}
 	fi
 
-	if [ ! -z "$msg" ]; then
+	if [ "${msg}" = 1 ]; then
 		printf "%03u" "$TEST_COUNT"
+		msg="${TEST_NAME}"
 	else
 		echo -n "   "
 	fi
@@ -1121,20 +1135,25 @@ chk_infi_nr()
 
 chk_join_nr()
 {
-	local msg="$1"
-	local syn_nr=$2
-	local syn_ack_nr=$3
-	local ack_nr=$4
-	local csum_ns1=${5:-0}
-	local csum_ns2=${6:-0}
-	local fail_nr=${7:-0}
-	local rst_nr=${8:-0}
-	local infi_nr=${9:-0}
+	local syn_nr=$1
+	local syn_ack_nr=$2
+	local ack_nr=$3
+	local csum_ns1=${4:-0}
+	local csum_ns2=${5:-0}
+	local fail_nr=${6:-0}
+	local rst_nr=${7:-0}
+	local infi_nr=${8:-0}
+	local corrupted_pkts=${9:-0}
 	local count
 	local dump_stats
 	local with_cookie
+	local title="${TEST_NAME}"
 
-	printf "%03u %-36s %s" "$TEST_COUNT" "$msg" "syn"
+	if [ "${corrupted_pkts}" -gt 0 ]; then
+		title+=": ${corrupted_pkts} corrupted pkts"
+	fi
+
+	printf "%03u %-36s %s" "${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
@@ -1499,65 +1518,65 @@ set_userspace_pm()
 
 subflows_tests()
 {
-	if reset; then
+	if reset "no JOIN"; then
 		run_tests $ns1 $ns2 10.0.1.1
-		chk_join_nr "no JOIN" 0 0 0
+		chk_join_nr 0 0 0
 	fi
 
 	# subflow limited by client
-	if reset; then
+	if reset "single subflow, limited by client"; then
 		pm_nl_set_limits $ns1 0 0
 		pm_nl_set_limits $ns2 0 0
 		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
 		run_tests $ns1 $ns2 10.0.1.1
-		chk_join_nr "single subflow, limited by client" 0 0 0
+		chk_join_nr 0 0 0
 	fi
 
 	# subflow limited by server
-	if reset; then
+	if reset "single subflow, limited by server"; then
 		pm_nl_set_limits $ns1 0 0
 		pm_nl_set_limits $ns2 0 1
 		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
 		run_tests $ns1 $ns2 10.0.1.1
-		chk_join_nr "single subflow, limited by server" 1 1 0
+		chk_join_nr 1 1 0
 	fi
 
 	# subflow
-	if reset; then
+	if reset "single subflow"; then
 		pm_nl_set_limits $ns1 0 1
 		pm_nl_set_limits $ns2 0 1
 		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
 		run_tests $ns1 $ns2 10.0.1.1
-		chk_join_nr "single subflow" 1 1 1
+		chk_join_nr 1 1 1
 	fi
 
 	# multiple subflows
-	if reset; then
+	if reset "multiple subflows"; then
 		pm_nl_set_limits $ns1 0 2
 		pm_nl_set_limits $ns2 0 2
 		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
 		pm_nl_add_endpoint $ns2 10.0.2.2 flags subflow
 		run_tests $ns1 $ns2 10.0.1.1
-		chk_join_nr "multiple subflows" 2 2 2
+		chk_join_nr 2 2 2
 	fi
 
 	# multiple subflows limited by server
-	if reset; then
+	if reset "multiple subflows, limited by server"; then
 		pm_nl_set_limits $ns1 0 1
 		pm_nl_set_limits $ns2 0 2
 		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
 		pm_nl_add_endpoint $ns2 10.0.2.2 flags subflow
 		run_tests $ns1 $ns2 10.0.1.1
-		chk_join_nr "multiple subflows, limited by server" 2 2 1
+		chk_join_nr 2 2 1
 	fi
 
 	# single subflow, dev
-	if reset; then
+	if reset "single subflow, dev"; then
 		pm_nl_set_limits $ns1 0 1
 		pm_nl_set_limits $ns2 0 1
 		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow dev ns2eth3
 		run_tests $ns1 $ns2 10.0.1.1
-		chk_join_nr "single subflow, dev" 1 1 1
+		chk_join_nr 1 1 1
 	fi
 }
 
@@ -1565,40 +1584,40 @@ subflows_error_tests()
 {
 	# If a single subflow is configured, and matches the MPC src
 	# address, no additional subflow should be created
-	if reset; then
+	if reset "no MPC reuse with single endpoint"; then
 		pm_nl_set_limits $ns1 0 1
 		pm_nl_set_limits $ns2 0 1
 		pm_nl_add_endpoint $ns2 10.0.1.2 flags subflow
 		run_tests $ns1 $ns2 10.0.1.1 0 0 0 slow
-		chk_join_nr "no MPC reuse with single endpoint" 0 0 0
+		chk_join_nr 0 0 0
 	fi
 
 	# multiple subflows, with subflow creation error
-	if reset; then
+	if reset "multi subflows, with failing subflow"; then
 		pm_nl_set_limits $ns1 0 2
 		pm_nl_set_limits $ns2 0 2
 		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
 		pm_nl_add_endpoint $ns2 10.0.2.2 flags subflow
 		ip netns exec $ns1 iptables -A INPUT -s 10.0.3.2 -p tcp -j REJECT
 		run_tests $ns1 $ns2 10.0.1.1 0 0 0 slow
-		chk_join_nr "multi subflows, with failing subflow" 1 1 1
+		chk_join_nr 1 1 1
 	fi
 
 	# multiple subflows, with subflow timeout on MPJ
-	if reset; then
+	if reset "multi subflows, with subflow timeout"; then
 		pm_nl_set_limits $ns1 0 2
 		pm_nl_set_limits $ns2 0 2
 		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
 		pm_nl_add_endpoint $ns2 10.0.2.2 flags subflow
 		ip netns exec $ns1 iptables -A INPUT -s 10.0.3.2 -p tcp -j DROP
 		run_tests $ns1 $ns2 10.0.1.1 0 0 0 slow
-		chk_join_nr "multi subflows, with subflow timeout" 1 1 1
+		chk_join_nr 1 1 1
 	fi
 
 	# multiple subflows, check that the endpoint corresponding to
 	# closed subflow (due to reset) is not reused if additional
 	# subflows are added later
-	if reset; then
+	if reset "multi subflows, fair usage on close"; then
 		pm_nl_set_limits $ns1 0 1
 		pm_nl_set_limits $ns2 0 1
 		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
@@ -1612,27 +1631,27 @@ subflows_error_tests()
 
 		# additional subflow could be created only if the PM select
 		# the later endpoint, skipping the already used one
-		chk_join_nr "multi subflows, fair usage on close" 1 1 1
+		chk_join_nr 1 1 1
 	fi
 }
 
 signal_address_tests()
 {
 	# add_address, unused
-	if reset; then
+	if reset "unused signal address"; then
 		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
 		run_tests $ns1 $ns2 10.0.1.1
-		chk_join_nr "unused signal address" 0 0 0
+		chk_join_nr 0 0 0
 		chk_add_nr 1 1
 	fi
 
 	# accept and use add_addr
-	if reset; then
+	if reset "signal address"; then
 		pm_nl_set_limits $ns1 0 1
 		pm_nl_set_limits $ns2 1 1
 		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
 		run_tests $ns1 $ns2 10.0.1.1
-		chk_join_nr "signal address" 1 1 1
+		chk_join_nr 1 1 1
 		chk_add_nr 1 1
 	fi
 
@@ -1640,54 +1659,54 @@ signal_address_tests()
 	# note: signal address in server ns and local addresses in client ns must
 	# belong to different subnets or one of the listed local address could be
 	# used for 'add_addr' subflow
-	if reset; then
+	if reset "subflow and signal"; then
 		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
 		pm_nl_set_limits $ns1 0 2
 		pm_nl_set_limits $ns2 1 2
 		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
 		run_tests $ns1 $ns2 10.0.1.1
-		chk_join_nr "subflow and signal" 2 2 2
+		chk_join_nr 2 2 2
 		chk_add_nr 1 1
 	fi
 
 	# accept and use add_addr with additional subflows
-	if reset; then
+	if reset "multiple subflows and signal"; then
 		pm_nl_set_limits $ns1 0 3
 		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
 		pm_nl_set_limits $ns2 1 3
 		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
 		pm_nl_add_endpoint $ns2 10.0.4.2 flags subflow
 		run_tests $ns1 $ns2 10.0.1.1
-		chk_join_nr "multiple subflows and signal" 3 3 3
+		chk_join_nr 3 3 3
 		chk_add_nr 1 1
 	fi
 
 	# signal addresses
-	if reset; then
+	if reset "signal addresses"; then
 		pm_nl_set_limits $ns1 3 3
 		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
 		pm_nl_add_endpoint $ns1 10.0.3.1 flags signal
 		pm_nl_add_endpoint $ns1 10.0.4.1 flags signal
 		pm_nl_set_limits $ns2 3 3
 		run_tests $ns1 $ns2 10.0.1.1
-		chk_join_nr "signal addresses" 3 3 3
+		chk_join_nr 3 3 3
 		chk_add_nr 3 3
 	fi
 
 	# signal invalid addresses
-	if reset; then
+	if reset "signal invalid addresses"; then
 		pm_nl_set_limits $ns1 3 3
 		pm_nl_add_endpoint $ns1 10.0.12.1 flags signal
 		pm_nl_add_endpoint $ns1 10.0.3.1 flags signal
 		pm_nl_add_endpoint $ns1 10.0.14.1 flags signal
 		pm_nl_set_limits $ns2 3 3
 		run_tests $ns1 $ns2 10.0.1.1
-		chk_join_nr "signal invalid addresses" 1 1 1
+		chk_join_nr 1 1 1
 		chk_add_nr 3 3
 	fi
 
 	# signal addresses race test
-	if reset; then
+	if reset "signal addresses race test"; then
 		pm_nl_set_limits $ns1 4 4
 		pm_nl_set_limits $ns2 4 4
 		pm_nl_add_endpoint $ns1 10.0.1.1 flags signal
@@ -1702,7 +1721,7 @@ signal_address_tests()
 		# the peer could possibly miss some addr notification, allow retransmission
 		ip netns exec $ns1 sysctl -q net.mptcp.add_addr_timeout=1
 		run_tests $ns1 $ns2 10.0.1.1 0 0 0 slow
-		chk_join_nr "signal addresses race test" 3 3 3
+		chk_join_nr 3 3 3
 
 		# the server will not signal the address terminating
 		# the MPC subflow
@@ -1713,7 +1732,7 @@ signal_address_tests()
 link_failure_tests()
 {
 	# accept and use add_addr with additional subflows and link loss
-	if reset; then
+	if reset "multiple flows, signal, link failure"; then
 		# without any b/w limit each veth could spool the packets and get
 		# them acked at xmit time, so that the corresponding subflow will
 		# have almost always no outstanding pkts, the scheduler will pick
@@ -1727,14 +1746,14 @@ link_failure_tests()
 		pm_nl_add_endpoint $ns2 10.0.3.2 dev ns2eth3 flags subflow
 		pm_nl_add_endpoint $ns2 10.0.4.2 dev ns2eth4 flags subflow
 		run_tests $ns1 $ns2 10.0.1.1 1
-		chk_join_nr "multiple flows, signal, link failure" 3 3 3
+		chk_join_nr 3 3 3
 		chk_add_nr 1 1
 		chk_stale_nr $ns2 1 5 1
 	fi
 
 	# accept and use add_addr with additional subflows and link loss
 	# for bidirectional transfer
-	if reset; then
+	if reset "multi flows, signal, bidi, link fail"; then
 		init_shapers
 		pm_nl_set_limits $ns1 0 3
 		pm_nl_add_endpoint $ns1 10.0.2.1 dev ns1eth2 flags signal
@@ -1742,14 +1761,14 @@ link_failure_tests()
 		pm_nl_add_endpoint $ns2 10.0.3.2 dev ns2eth3 flags subflow
 		pm_nl_add_endpoint $ns2 10.0.4.2 dev ns2eth4 flags subflow
 		run_tests $ns1 $ns2 10.0.1.1 2
-		chk_join_nr "multi flows, signal, bidi, link fail" 3 3 3
+		chk_join_nr 3 3 3
 		chk_add_nr 1 1
 		chk_stale_nr $ns2 1 -1 1
 	fi
 
 	# 2 subflows plus 1 backup subflow with a lossy link, backup
 	# will never be used
-	if reset; then
+	if reset "backup subflow unused, link failure"; then
 		init_shapers
 		pm_nl_set_limits $ns1 0 2
 		pm_nl_add_endpoint $ns1 10.0.2.1 dev ns1eth2 flags signal
@@ -1757,14 +1776,14 @@ link_failure_tests()
 		FAILING_LINKS="1"
 		pm_nl_add_endpoint $ns2 10.0.3.2 dev ns2eth3 flags subflow,backup
 		run_tests $ns1 $ns2 10.0.1.1 1
-		chk_join_nr "backup subflow unused, link failure" 2 2 2
+		chk_join_nr 2 2 2
 		chk_add_nr 1 1
 		chk_link_usage $ns2 ns2eth3 $cinsent 0
 	fi
 
 	# 2 lossy links after half transfer, backup will get half of
 	# the traffic
-	if reset; then
+	if reset "backup flow used, multi links fail"; then
 		init_shapers
 		pm_nl_set_limits $ns1 0 2
 		pm_nl_add_endpoint $ns1 10.0.2.1 dev ns1eth2 flags signal
@@ -1772,7 +1791,7 @@ link_failure_tests()
 		pm_nl_add_endpoint $ns2 10.0.3.2 dev ns2eth3 flags subflow,backup
 		FAILING_LINKS="1 2"
 		run_tests $ns1 $ns2 10.0.1.1 1
-		chk_join_nr "backup flow used, multi links fail" 2 2 2
+		chk_join_nr 2 2 2
 		chk_add_nr 1 1
 		chk_stale_nr $ns2 2 4 2
 		chk_link_usage $ns2 ns2eth3 $cinsent 50
@@ -1780,7 +1799,7 @@ link_failure_tests()
 
 	# use a backup subflow with the first subflow on a lossy link
 	# for bidirectional transfer
-	if reset; then
+	if reset "backup flow used, bidi, link failure"; then
 		init_shapers
 		pm_nl_set_limits $ns1 0 2
 		pm_nl_add_endpoint $ns1 10.0.2.1 dev ns1eth2 flags signal
@@ -1788,7 +1807,7 @@ link_failure_tests()
 		pm_nl_add_endpoint $ns2 10.0.3.2 dev ns2eth3 flags subflow,backup
 		FAILING_LINKS="1 2"
 		run_tests $ns1 $ns2 10.0.1.1 2
-		chk_join_nr "backup flow used, bidi, link failure" 2 2 2
+		chk_join_nr 2 2 2
 		chk_add_nr 1 1
 		chk_stale_nr $ns2 1 -1 2
 		chk_link_usage $ns2 ns2eth3 $cinsent 50
@@ -1798,44 +1817,44 @@ link_failure_tests()
 add_addr_timeout_tests()
 {
 	# add_addr timeout
-	if reset_with_add_addr_timeout; then
+	if reset_with_add_addr_timeout "signal address, ADD_ADDR timeout"; then
 		pm_nl_set_limits $ns1 0 1
 		pm_nl_set_limits $ns2 1 1
 		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
 		run_tests $ns1 $ns2 10.0.1.1 0 0 0 slow
-		chk_join_nr "signal address, ADD_ADDR timeout" 1 1 1
+		chk_join_nr 1 1 1
 		chk_add_nr 4 0
 	fi
 
 	# add_addr timeout IPv6
-	if reset_with_add_addr_timeout 6; then
+	if reset_with_add_addr_timeout "signal address, ADD_ADDR6 timeout" 6; then
 		pm_nl_set_limits $ns1 0 1
 		pm_nl_set_limits $ns2 1 1
 		pm_nl_add_endpoint $ns1 dead:beef:2::1 flags signal
 		run_tests $ns1 $ns2 dead:beef:1::1 0 0 0 slow
-		chk_join_nr "signal address, ADD_ADDR6 timeout" 1 1 1
+		chk_join_nr 1 1 1
 		chk_add_nr 4 0
 	fi
 
 	# signal addresses timeout
-	if reset_with_add_addr_timeout; then
+	if reset_with_add_addr_timeout "signal addresses, ADD_ADDR timeout"; then
 		pm_nl_set_limits $ns1 2 2
 		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
 		pm_nl_add_endpoint $ns1 10.0.3.1 flags signal
 		pm_nl_set_limits $ns2 2 2
 		run_tests $ns1 $ns2 10.0.1.1 0 0 0 speed_10
-		chk_join_nr "signal addresses, ADD_ADDR timeout" 2 2 2
+		chk_join_nr 2 2 2
 		chk_add_nr 8 0
 	fi
 
 	# signal invalid addresses timeout
-	if reset_with_add_addr_timeout; then
+	if reset_with_add_addr_timeout "invalid address, ADD_ADDR timeout"; then
 		pm_nl_set_limits $ns1 2 2
 		pm_nl_add_endpoint $ns1 10.0.12.1 flags signal
 		pm_nl_add_endpoint $ns1 10.0.3.1 flags signal
 		pm_nl_set_limits $ns2 2 2
 		run_tests $ns1 $ns2 10.0.1.1 0 0 0 speed_10
-		chk_join_nr "invalid address, ADD_ADDR timeout" 1 1 1
+		chk_join_nr 1 1 1
 		chk_add_nr 8 0
 	fi
 }
@@ -1843,156 +1862,156 @@ add_addr_timeout_tests()
 remove_tests()
 {
 	# single subflow, remove
-	if reset; then
+	if reset "remove single subflow"; then
 		pm_nl_set_limits $ns1 0 1
 		pm_nl_set_limits $ns2 0 1
 		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
 		run_tests $ns1 $ns2 10.0.1.1 0 0 -1 slow
-		chk_join_nr "remove single subflow" 1 1 1
+		chk_join_nr 1 1 1
 		chk_rm_nr 1 1
 	fi
 
 	# multiple subflows, remove
-	if reset; then
+	if reset "remove multiple subflows"; then
 		pm_nl_set_limits $ns1 0 2
 		pm_nl_set_limits $ns2 0 2
 		pm_nl_add_endpoint $ns2 10.0.2.2 flags subflow
 		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
 		run_tests $ns1 $ns2 10.0.1.1 0 0 -2 slow
-		chk_join_nr "remove multiple subflows" 2 2 2
+		chk_join_nr 2 2 2
 		chk_rm_nr 2 2
 	fi
 
 	# single address, remove
-	if reset; then
+	if reset "remove single address"; then
 		pm_nl_set_limits $ns1 0 1
 		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
 		pm_nl_set_limits $ns2 1 1
 		run_tests $ns1 $ns2 10.0.1.1 0 -1 0 slow
-		chk_join_nr "remove single address" 1 1 1
+		chk_join_nr 1 1 1
 		chk_add_nr 1 1
 		chk_rm_nr 1 1 invert
 	fi
 
 	# subflow and signal, remove
-	if reset; then
+	if reset "remove subflow and signal"; then
 		pm_nl_set_limits $ns1 0 2
 		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
 		pm_nl_set_limits $ns2 1 2
 		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
 		run_tests $ns1 $ns2 10.0.1.1 0 -1 -1 slow
-		chk_join_nr "remove subflow and signal" 2 2 2
+		chk_join_nr 2 2 2
 		chk_add_nr 1 1
 		chk_rm_nr 1 1
 	fi
 
 	# subflows and signal, remove
-	if reset; then
+	if reset "remove subflows and signal"; then
 		pm_nl_set_limits $ns1 0 3
 		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
 		pm_nl_set_limits $ns2 1 3
 		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
 		pm_nl_add_endpoint $ns2 10.0.4.2 flags subflow
 		run_tests $ns1 $ns2 10.0.1.1 0 -1 -2 slow
-		chk_join_nr "remove subflows and signal" 3 3 3
+		chk_join_nr 3 3 3
 		chk_add_nr 1 1
 		chk_rm_nr 2 2
 	fi
 
 	# addresses remove
-	if reset; then
+	if reset "remove addresses"; then
 		pm_nl_set_limits $ns1 3 3
 		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal id 250
 		pm_nl_add_endpoint $ns1 10.0.3.1 flags signal
 		pm_nl_add_endpoint $ns1 10.0.4.1 flags signal
 		pm_nl_set_limits $ns2 3 3
 		run_tests $ns1 $ns2 10.0.1.1 0 -3 0 slow
-		chk_join_nr "remove addresses" 3 3 3
+		chk_join_nr 3 3 3
 		chk_add_nr 3 3
 		chk_rm_nr 3 3 invert
 	fi
 
 	# invalid addresses remove
-	if reset; then
+	if reset "remove invalid addresses"; then
 		pm_nl_set_limits $ns1 3 3
 		pm_nl_add_endpoint $ns1 10.0.12.1 flags signal
 		pm_nl_add_endpoint $ns1 10.0.3.1 flags signal
 		pm_nl_add_endpoint $ns1 10.0.14.1 flags signal
 		pm_nl_set_limits $ns2 3 3
 		run_tests $ns1 $ns2 10.0.1.1 0 -3 0 slow
-		chk_join_nr "remove invalid addresses" 1 1 1
+		chk_join_nr 1 1 1
 		chk_add_nr 3 3
 		chk_rm_nr 3 1 invert
 	fi
 
 	# subflows and signal, flush
-	if reset; then
+	if reset "flush subflows and signal"; then
 		pm_nl_set_limits $ns1 0 3
 		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
 		pm_nl_set_limits $ns2 1 3
 		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
 		pm_nl_add_endpoint $ns2 10.0.4.2 flags subflow
 		run_tests $ns1 $ns2 10.0.1.1 0 -8 -8 slow
-		chk_join_nr "flush subflows and signal" 3 3 3
+		chk_join_nr 3 3 3
 		chk_add_nr 1 1
 		chk_rm_nr 1 3 invert simult
 	fi
 
 	# subflows flush
-	if reset; then
+	if reset "flush subflows"; then
 		pm_nl_set_limits $ns1 3 3
 		pm_nl_set_limits $ns2 3 3
 		pm_nl_add_endpoint $ns2 10.0.2.2 flags subflow id 150
 		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
 		pm_nl_add_endpoint $ns2 10.0.4.2 flags subflow
 		run_tests $ns1 $ns2 10.0.1.1 0 -8 -8 slow
-		chk_join_nr "flush subflows" 3 3 3
+		chk_join_nr 3 3 3
 		chk_rm_nr 0 3 simult
 	fi
 
 	# addresses flush
-	if reset; then
+	if reset "flush addresses"; then
 		pm_nl_set_limits $ns1 3 3
 		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal id 250
 		pm_nl_add_endpoint $ns1 10.0.3.1 flags signal
 		pm_nl_add_endpoint $ns1 10.0.4.1 flags signal
 		pm_nl_set_limits $ns2 3 3
 		run_tests $ns1 $ns2 10.0.1.1 0 -8 -8 slow
-		chk_join_nr "flush addresses" 3 3 3
+		chk_join_nr 3 3 3
 		chk_add_nr 3 3
 		chk_rm_nr 3 3 invert simult
 	fi
 
 	# invalid addresses flush
-	if reset; then
+	if reset "flush invalid addresses"; then
 		pm_nl_set_limits $ns1 3 3
 		pm_nl_add_endpoint $ns1 10.0.12.1 flags signal
 		pm_nl_add_endpoint $ns1 10.0.3.1 flags signal
 		pm_nl_add_endpoint $ns1 10.0.14.1 flags signal
 		pm_nl_set_limits $ns2 3 3
 		run_tests $ns1 $ns2 10.0.1.1 0 -8 0 slow
-		chk_join_nr "flush invalid addresses" 1 1 1
+		chk_join_nr 1 1 1
 		chk_add_nr 3 3
 		chk_rm_nr 3 1 invert
 	fi
 
 	# remove id 0 subflow
-	if reset; then
+	if reset "remove id 0 subflow"; then
 		pm_nl_set_limits $ns1 0 1
 		pm_nl_set_limits $ns2 0 1
 		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
 		run_tests $ns1 $ns2 10.0.1.1 0 0 -9 slow
-		chk_join_nr "remove id 0 subflow" 1 1 1
+		chk_join_nr 1 1 1
 		chk_rm_nr 1 1
 	fi
 
 	# remove id 0 address
-	if reset; then
+	if reset "remove id 0 address"; then
 		pm_nl_set_limits $ns1 0 1
 		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
 		pm_nl_set_limits $ns2 1 1
 		run_tests $ns1 $ns2 10.0.1.1 0 -9 0 slow
-		chk_join_nr "remove id 0 address" 1 1 1
+		chk_join_nr 1 1 1
 		chk_add_nr 1 1
 		chk_rm_nr 1 1 invert
 	fi
@@ -2001,44 +2020,44 @@ remove_tests()
 add_tests()
 {
 	# add single subflow
-	if reset; then
+	if reset "add single subflow"; then
 		pm_nl_set_limits $ns1 0 1
 		pm_nl_set_limits $ns2 0 1
 		run_tests $ns1 $ns2 10.0.1.1 0 0 1 slow
-		chk_join_nr "add single subflow" 1 1 1
+		chk_join_nr 1 1 1
 	fi
 
 	# add signal address
-	if reset; then
+	if reset "add signal address"; then
 		pm_nl_set_limits $ns1 0 1
 		pm_nl_set_limits $ns2 1 1
 		run_tests $ns1 $ns2 10.0.1.1 0 1 0 slow
-		chk_join_nr "add signal address" 1 1 1
+		chk_join_nr 1 1 1
 		chk_add_nr 1 1
 	fi
 
 	# add multiple subflows
-	if reset; then
+	if reset "add multiple subflows"; then
 		pm_nl_set_limits $ns1 0 2
 		pm_nl_set_limits $ns2 0 2
 		run_tests $ns1 $ns2 10.0.1.1 0 0 2 slow
-		chk_join_nr "add multiple subflows" 2 2 2
+		chk_join_nr 2 2 2
 	fi
 
 	# add multiple subflows IPv6
-	if reset; then
+	if reset "add multiple subflows IPv6"; then
 		pm_nl_set_limits $ns1 0 2
 		pm_nl_set_limits $ns2 0 2
 		run_tests $ns1 $ns2 dead:beef:1::1 0 0 2 slow
-		chk_join_nr "add multiple subflows IPv6" 2 2 2
+		chk_join_nr 2 2 2
 	fi
 
 	# add multiple addresses IPv6
-	if reset; then
+	if reset "add multiple addresses IPv6"; then
 		pm_nl_set_limits $ns1 0 2
 		pm_nl_set_limits $ns2 2 2
 		run_tests $ns1 $ns2 dead:beef:1::1 0 2 0 slow
-		chk_join_nr "add multiple addresses IPv6" 2 2 2
+		chk_join_nr 2 2 2
 		chk_add_nr 2 2
 	fi
 }
@@ -2046,51 +2065,51 @@ add_tests()
 ipv6_tests()
 {
 	# subflow IPv6
-	if reset; then
+	if reset "single subflow IPv6"; then
 		pm_nl_set_limits $ns1 0 1
 		pm_nl_set_limits $ns2 0 1
 		pm_nl_add_endpoint $ns2 dead:beef:3::2 dev ns2eth3 flags subflow
 		run_tests $ns1 $ns2 dead:beef:1::1 0 0 0 slow
-		chk_join_nr "single subflow IPv6" 1 1 1
+		chk_join_nr 1 1 1
 	fi
 
 	# add_address, unused IPv6
-	if reset; then
+	if reset "unused signal address IPv6"; then
 		pm_nl_add_endpoint $ns1 dead:beef:2::1 flags signal
 		run_tests $ns1 $ns2 dead:beef:1::1 0 0 0 slow
-		chk_join_nr "unused signal address IPv6" 0 0 0
+		chk_join_nr 0 0 0
 		chk_add_nr 1 1
 	fi
 
 	# signal address IPv6
-	if reset; then
+	if reset "single address IPv6"; then
 		pm_nl_set_limits $ns1 0 1
 		pm_nl_add_endpoint $ns1 dead:beef:2::1 flags signal
 		pm_nl_set_limits $ns2 1 1
 		run_tests $ns1 $ns2 dead:beef:1::1 0 0 0 slow
-		chk_join_nr "single address IPv6" 1 1 1
+		chk_join_nr 1 1 1
 		chk_add_nr 1 1
 	fi
 
 	# single address IPv6, remove
-	if reset; then
+	if reset "remove single address IPv6"; then
 		pm_nl_set_limits $ns1 0 1
 		pm_nl_add_endpoint $ns1 dead:beef:2::1 flags signal
 		pm_nl_set_limits $ns2 1 1
 		run_tests $ns1 $ns2 dead:beef:1::1 0 -1 0 slow
-		chk_join_nr "remove single address IPv6" 1 1 1
+		chk_join_nr 1 1 1
 		chk_add_nr 1 1
 		chk_rm_nr 1 1 invert
 	fi
 
 	# subflow and signal IPv6, remove
-	if reset; then
+	if reset "remove subflow and signal IPv6"; then
 		pm_nl_set_limits $ns1 0 2
 		pm_nl_add_endpoint $ns1 dead:beef:2::1 flags signal
 		pm_nl_set_limits $ns2 1 2
 		pm_nl_add_endpoint $ns2 dead:beef:3::2 dev ns2eth3 flags subflow
 		run_tests $ns1 $ns2 dead:beef:1::1 0 -1 -1 slow
-		chk_join_nr "remove subflow and signal IPv6" 2 2 2
+		chk_join_nr 2 2 2
 		chk_add_nr 1 1
 		chk_rm_nr 1 1
 	fi
@@ -2099,120 +2118,120 @@ ipv6_tests()
 v4mapped_tests()
 {
 	# subflow IPv4-mapped to IPv4-mapped
-	if reset; then
+	if reset "single subflow IPv4-mapped"; then
 		pm_nl_set_limits $ns1 0 1
 		pm_nl_set_limits $ns2 0 1
 		pm_nl_add_endpoint $ns2 "::ffff:10.0.3.2" flags subflow
 		run_tests $ns1 $ns2 "::ffff:10.0.1.1"
-		chk_join_nr "single subflow IPv4-mapped" 1 1 1
+		chk_join_nr 1 1 1
 	fi
 
 	# signal address IPv4-mapped with IPv4-mapped sk
-	if reset; then
+	if reset "signal address IPv4-mapped"; then
 		pm_nl_set_limits $ns1 0 1
 		pm_nl_set_limits $ns2 1 1
 		pm_nl_add_endpoint $ns1 "::ffff:10.0.2.1" flags signal
 		run_tests $ns1 $ns2 "::ffff:10.0.1.1"
-		chk_join_nr "signal address IPv4-mapped" 1 1 1
+		chk_join_nr 1 1 1
 		chk_add_nr 1 1
 	fi
 
 	# subflow v4-map-v6
-	if reset; then
+	if reset "single subflow v4-map-v6"; then
 		pm_nl_set_limits $ns1 0 1
 		pm_nl_set_limits $ns2 0 1
 		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
 		run_tests $ns1 $ns2 "::ffff:10.0.1.1"
-		chk_join_nr "single subflow v4-map-v6" 1 1 1
+		chk_join_nr 1 1 1
 	fi
 
 	# signal address v4-map-v6
-	if reset; then
+	if reset "signal address v4-map-v6"; then
 		pm_nl_set_limits $ns1 0 1
 		pm_nl_set_limits $ns2 1 1
 		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
 		run_tests $ns1 $ns2 "::ffff:10.0.1.1"
-		chk_join_nr "signal address v4-map-v6" 1 1 1
+		chk_join_nr 1 1 1
 		chk_add_nr 1 1
 	fi
 
 	# subflow v6-map-v4
-	if reset; then
+	if reset "single subflow v6-map-v4"; then
 		pm_nl_set_limits $ns1 0 1
 		pm_nl_set_limits $ns2 0 1
 		pm_nl_add_endpoint $ns2 "::ffff:10.0.3.2" flags subflow
 		run_tests $ns1 $ns2 10.0.1.1
-		chk_join_nr "single subflow v6-map-v4" 1 1 1
+		chk_join_nr 1 1 1
 	fi
 
 	# signal address v6-map-v4
-	if reset; then
+	if reset "signal address v6-map-v4"; then
 		pm_nl_set_limits $ns1 0 1
 		pm_nl_set_limits $ns2 1 1
 		pm_nl_add_endpoint $ns1 "::ffff:10.0.2.1" flags signal
 		run_tests $ns1 $ns2 10.0.1.1
-		chk_join_nr "signal address v6-map-v4" 1 1 1
+		chk_join_nr 1 1 1
 		chk_add_nr 1 1
 	fi
 
 	# no subflow IPv6 to v4 address
-	if reset; then
+	if reset "no JOIN with diff families v4-v6"; then
 		pm_nl_set_limits $ns1 0 1
 		pm_nl_set_limits $ns2 0 1
 		pm_nl_add_endpoint $ns2 dead:beef:2::2 flags subflow
 		run_tests $ns1 $ns2 10.0.1.1
-		chk_join_nr "no JOIN with diff families v4-v6" 0 0 0
+		chk_join_nr 0 0 0
 	fi
 
 	# no subflow IPv6 to v4 address even if v6 has a valid v4 at the end
-	if reset; then
+	if reset "no JOIN with diff families v4-v6-2"; then
 		pm_nl_set_limits $ns1 0 1
 		pm_nl_set_limits $ns2 0 1
 		pm_nl_add_endpoint $ns2 dead:beef:2::10.0.3.2 flags subflow
 		run_tests $ns1 $ns2 10.0.1.1
-		chk_join_nr "no JOIN with diff families v4-v6-2" 0 0 0
+		chk_join_nr 0 0 0
 	fi
 
 	# no subflow IPv4 to v6 address, no need to slow down too then
-	if reset; then
+	if reset "no JOIN with diff families v6-v4"; then
 		pm_nl_set_limits $ns1 0 1
 		pm_nl_set_limits $ns2 0 1
 		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
 		run_tests $ns1 $ns2 dead:beef:1::1
-		chk_join_nr "no JOIN with diff families v6-v4" 0 0 0
+		chk_join_nr 0 0 0
 	fi
 }
 
 backup_tests()
 {
 	# single subflow, backup
-	if reset; then
+	if reset "single subflow, backup"; then
 		pm_nl_set_limits $ns1 0 1
 		pm_nl_set_limits $ns2 0 1
 		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow,backup
 		run_tests $ns1 $ns2 10.0.1.1 0 0 0 slow nobackup
-		chk_join_nr "single subflow, backup" 1 1 1
+		chk_join_nr 1 1 1
 		chk_prio_nr 0 1
 	fi
 
 	# single address, backup
-	if reset; then
+	if reset "single address, backup"; then
 		pm_nl_set_limits $ns1 0 1
 		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
 		pm_nl_set_limits $ns2 1 1
 		run_tests $ns1 $ns2 10.0.1.1 0 0 0 slow backup
-		chk_join_nr "single address, backup" 1 1 1
+		chk_join_nr 1 1 1
 		chk_add_nr 1 1
 		chk_prio_nr 1 1
 	fi
 
 	# single address with port, backup
-	if reset; then
+	if reset "single address with port, backup"; then
 		pm_nl_set_limits $ns1 0 1
 		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal port 10100
 		pm_nl_set_limits $ns2 1 1
 		run_tests $ns1 $ns2 10.0.1.1 0 0 0 slow backup
-		chk_join_nr "single address with port, backup" 1 1 1
+		chk_join_nr 1 1 1
 		chk_add_nr 1 1
 		chk_prio_nr 1 1
 	fi
@@ -2221,81 +2240,81 @@ backup_tests()
 add_addr_ports_tests()
 {
 	# signal address with port
-	if reset; then
+	if reset "signal address with port"; then
 		pm_nl_set_limits $ns1 0 1
 		pm_nl_set_limits $ns2 1 1
 		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal port 10100
 		run_tests $ns1 $ns2 10.0.1.1
-		chk_join_nr "signal address with port" 1 1 1
+		chk_join_nr 1 1 1
 		chk_add_nr 1 1 1
 	fi
 
 	# subflow and signal with port
-	if reset; then
+	if reset "subflow and signal with port"; then
 		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal port 10100
 		pm_nl_set_limits $ns1 0 2
 		pm_nl_set_limits $ns2 1 2
 		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
 		run_tests $ns1 $ns2 10.0.1.1
-		chk_join_nr "subflow and signal with port" 2 2 2
+		chk_join_nr 2 2 2
 		chk_add_nr 1 1 1
 	fi
 
 	# single address with port, remove
-	if reset; then
+	if reset "remove single address with port"; then
 		pm_nl_set_limits $ns1 0 1
 		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal port 10100
 		pm_nl_set_limits $ns2 1 1
 		run_tests $ns1 $ns2 10.0.1.1 0 -1 0 slow
-		chk_join_nr "remove single address with port" 1 1 1
+		chk_join_nr 1 1 1
 		chk_add_nr 1 1 1
 		chk_rm_nr 1 1 invert
 	fi
 
 	# subflow and signal with port, remove
-	if reset; then
+	if reset "remove subflow and signal with port"; then
 		pm_nl_set_limits $ns1 0 2
 		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal port 10100
 		pm_nl_set_limits $ns2 1 2
 		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
 		run_tests $ns1 $ns2 10.0.1.1 0 -1 -1 slow
-		chk_join_nr "remove subflow and signal with port" 2 2 2
+		chk_join_nr 2 2 2
 		chk_add_nr 1 1 1
 		chk_rm_nr 1 1
 	fi
 
 	# subflows and signal with port, flush
-	if reset; then
+	if reset "flush subflows and signal with port"; then
 		pm_nl_set_limits $ns1 0 3
 		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal port 10100
 		pm_nl_set_limits $ns2 1 3
 		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
 		pm_nl_add_endpoint $ns2 10.0.4.2 flags subflow
 		run_tests $ns1 $ns2 10.0.1.1 0 -8 -2 slow
-		chk_join_nr "flush subflows and signal with port" 3 3 3
+		chk_join_nr 3 3 3
 		chk_add_nr 1 1
 		chk_rm_nr 1 3 invert simult
 	fi
 
 	# multiple addresses with port
-	if reset; then
+	if reset "multiple addresses with port"; then
 		pm_nl_set_limits $ns1 2 2
 		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal port 10100
 		pm_nl_add_endpoint $ns1 10.0.3.1 flags signal port 10100
 		pm_nl_set_limits $ns2 2 2
 		run_tests $ns1 $ns2 10.0.1.1
-		chk_join_nr "multiple addresses with port" 2 2 2
+		chk_join_nr 2 2 2
 		chk_add_nr 2 2 2
 	fi
 
 	# multiple addresses with ports
-	if reset; then
+	if reset "multiple addresses with ports"; then
 		pm_nl_set_limits $ns1 2 2
 		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal port 10100
 		pm_nl_add_endpoint $ns1 10.0.3.1 flags signal port 10101
 		pm_nl_set_limits $ns2 2 2
 		run_tests $ns1 $ns2 10.0.1.1
-		chk_join_nr "multiple addresses with ports" 2 2 2
+		chk_join_nr 2 2 2
 		chk_add_nr 2 2 2
 	fi
 }
@@ -2303,64 +2322,64 @@ add_addr_ports_tests()
 syncookies_tests()
 {
 	# single subflow, syncookies
-	if reset_with_cookies; then
+	if reset_with_cookies "single subflow with syn cookies"; then
 		pm_nl_set_limits $ns1 0 1
 		pm_nl_set_limits $ns2 0 1
 		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
 		run_tests $ns1 $ns2 10.0.1.1
-		chk_join_nr "single subflow with syn cookies" 1 1 1
+		chk_join_nr 1 1 1
 	fi
 
 	# multiple subflows with syn cookies
-	if reset_with_cookies; then
+	if reset_with_cookies "multiple subflows with syn cookies"; then
 		pm_nl_set_limits $ns1 0 2
 		pm_nl_set_limits $ns2 0 2
 		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
 		pm_nl_add_endpoint $ns2 10.0.2.2 flags subflow
 		run_tests $ns1 $ns2 10.0.1.1
-		chk_join_nr "multiple subflows with syn cookies" 2 2 2
+		chk_join_nr 2 2 2
 	fi
 
 	# multiple subflows limited by server
-	if reset_with_cookies; then
+	if reset_with_cookies "subflows limited by server w cookies"; then
 		pm_nl_set_limits $ns1 0 1
 		pm_nl_set_limits $ns2 0 2
 		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
 		pm_nl_add_endpoint $ns2 10.0.2.2 flags subflow
 		run_tests $ns1 $ns2 10.0.1.1
-		chk_join_nr "subflows limited by server w cookies" 2 1 1
+		chk_join_nr 2 1 1
 	fi
 
 	# test signal address with cookies
-	if reset_with_cookies; then
+	if reset_with_cookies "signal address with syn cookies"; then
 		pm_nl_set_limits $ns1 0 1
 		pm_nl_set_limits $ns2 1 1
 		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
 		run_tests $ns1 $ns2 10.0.1.1
-		chk_join_nr "signal address with syn cookies" 1 1 1
+		chk_join_nr 1 1 1
 		chk_add_nr 1 1
 	fi
 
 	# test cookie with subflow and signal
-	if reset_with_cookies; then
+	if reset_with_cookies "subflow and signal w cookies"; then
 		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
 		pm_nl_set_limits $ns1 0 2
 		pm_nl_set_limits $ns2 1 2
 		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
 		run_tests $ns1 $ns2 10.0.1.1
-		chk_join_nr "subflow and signal w cookies" 2 2 2
+		chk_join_nr 2 2 2
 		chk_add_nr 1 1
 	fi
 
 	# accept and use add_addr with additional subflows
-	if reset_with_cookies; then
+	if reset_with_cookies "subflows and signal w. cookies"; then
 		pm_nl_set_limits $ns1 0 3
 		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
 		pm_nl_set_limits $ns2 1 3
 		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
 		pm_nl_add_endpoint $ns2 10.0.4.2 flags subflow
 		run_tests $ns1 $ns2 10.0.1.1
-		chk_join_nr "subflows and signal w. cookies" 3 3 3
+		chk_join_nr 3 3 3
 		chk_add_nr 1 1
 	fi
 }
@@ -2372,7 +2391,7 @@ checksum_tests()
 		pm_nl_set_limits $ns1 0 1
 		pm_nl_set_limits $ns2 0 1
 		run_tests $ns1 $ns2 10.0.1.1
-		chk_csum_nr "checksum test 0 0"
+		chk_csum_nr 1
 	fi
 
 	# checksum test 1 1
@@ -2380,7 +2399,7 @@ checksum_tests()
 		pm_nl_set_limits $ns1 0 1
 		pm_nl_set_limits $ns2 0 1
 		run_tests $ns1 $ns2 10.0.1.1
-		chk_csum_nr "checksum test 1 1"
+		chk_csum_nr 1
 	fi
 
 	# checksum test 0 1
@@ -2388,7 +2407,7 @@ checksum_tests()
 		pm_nl_set_limits $ns1 0 1
 		pm_nl_set_limits $ns2 0 1
 		run_tests $ns1 $ns2 10.0.1.1
-		chk_csum_nr "checksum test 0 1"
+		chk_csum_nr 1
 	fi
 
 	# checksum test 1 0
@@ -2396,70 +2415,70 @@ checksum_tests()
 		pm_nl_set_limits $ns1 0 1
 		pm_nl_set_limits $ns2 0 1
 		run_tests $ns1 $ns2 10.0.1.1
-		chk_csum_nr "checksum test 1 0"
+		chk_csum_nr 1
 	fi
 }
 
 deny_join_id0_tests()
 {
 	# subflow allow join id0 ns1
-	if reset_with_allow_join_id0 1 0; then
+	if reset_with_allow_join_id0 "single subflow allow join id0 ns1" 1 0; then
 		pm_nl_set_limits $ns1 1 1
 		pm_nl_set_limits $ns2 1 1
 		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
 		run_tests $ns1 $ns2 10.0.1.1
-		chk_join_nr "single subflow allow join id0 ns1" 1 1 1
+		chk_join_nr 1 1 1
 	fi
 
 	# subflow allow join id0 ns2
-	if reset_with_allow_join_id0 0 1; then
+	if reset_with_allow_join_id0 "single subflow allow join id0 ns2" 0 1; then
 		pm_nl_set_limits $ns1 1 1
 		pm_nl_set_limits $ns2 1 1
 		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
 		run_tests $ns1 $ns2 10.0.1.1
-		chk_join_nr "single subflow allow join id0 ns2" 0 0 0
+		chk_join_nr 0 0 0
 	fi
 
 	# signal address allow join id0 ns1
 	# ADD_ADDRs are not affected by allow_join_id0 value.
-	if reset_with_allow_join_id0 1 0; then
+	if reset_with_allow_join_id0 "signal address allow join id0 ns1" 1 0; then
 		pm_nl_set_limits $ns1 1 1
 		pm_nl_set_limits $ns2 1 1
 		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
 		run_tests $ns1 $ns2 10.0.1.1
-		chk_join_nr "signal address allow join id0 ns1" 1 1 1
+		chk_join_nr 1 1 1
 		chk_add_nr 1 1
 	fi
 
 	# signal address allow join id0 ns2
 	# ADD_ADDRs are not affected by allow_join_id0 value.
-	if reset_with_allow_join_id0 0 1; then
+	if reset_with_allow_join_id0 "signal address allow join id0 ns2" 0 1; then
 		pm_nl_set_limits $ns1 1 1
 		pm_nl_set_limits $ns2 1 1
 		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
 		run_tests $ns1 $ns2 10.0.1.1
-		chk_join_nr "signal address allow join id0 ns2" 1 1 1
+		chk_join_nr 1 1 1
 		chk_add_nr 1 1
 	fi
 
 	# subflow and address allow join id0 ns1
-	if reset_with_allow_join_id0 1 0; then
+	if reset_with_allow_join_id0 "subflow and address allow join id0 1" 1 0; then
 		pm_nl_set_limits $ns1 2 2
 		pm_nl_set_limits $ns2 2 2
 		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
 		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
 		run_tests $ns1 $ns2 10.0.1.1
-		chk_join_nr "subflow and address allow join id0 1" 2 2 2
+		chk_join_nr 2 2 2
 	fi
 
 	# subflow and address allow join id0 ns2
-	if reset_with_allow_join_id0 0 1; then
+	if reset_with_allow_join_id0 "subflow and address allow join id0 2" 0 1; then
 		pm_nl_set_limits $ns1 2 2
 		pm_nl_set_limits $ns2 2 2
 		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
 		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
 		run_tests $ns1 $ns2 10.0.1.1
-		chk_join_nr "subflow and address allow join id0 2" 1 1 1
+		chk_join_nr 1 1 1
 	fi
 }
 
@@ -2468,37 +2487,37 @@ fullmesh_tests()
 	# fullmesh 1
 	# 2 fullmesh addrs in ns2, added before the connection,
 	# 1 non-fullmesh addr in ns1, added during the connection.
-	if reset; then
+	if reset "fullmesh test 2x1"; then
 		pm_nl_set_limits $ns1 0 4
 		pm_nl_set_limits $ns2 1 4
 		pm_nl_add_endpoint $ns2 10.0.2.2 flags subflow,fullmesh
 		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow,fullmesh
 		run_tests $ns1 $ns2 10.0.1.1 0 1 0 slow
-		chk_join_nr "fullmesh test 2x1" 4 4 4
+		chk_join_nr 4 4 4
 		chk_add_nr 1 1
 	fi
 
 	# fullmesh 2
 	# 1 non-fullmesh addr in ns1, added before the connection,
 	# 1 fullmesh addr in ns2, added during the connection.
-	if reset; then
+	if reset "fullmesh test 1x1"; then
 		pm_nl_set_limits $ns1 1 3
 		pm_nl_set_limits $ns2 1 3
 		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
 		run_tests $ns1 $ns2 10.0.1.1 0 0 fullmesh_1 slow
-		chk_join_nr "fullmesh test 1x1" 3 3 3
+		chk_join_nr 3 3 3
 		chk_add_nr 1 1
 	fi
 
 	# fullmesh 3
 	# 1 non-fullmesh addr in ns1, added before the connection,
 	# 2 fullmesh addrs in ns2, added during the connection.
-	if reset; then
+	if reset "fullmesh test 1x2"; then
 		pm_nl_set_limits $ns1 2 5
 		pm_nl_set_limits $ns2 1 5
 		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
 		run_tests $ns1 $ns2 10.0.1.1 0 0 fullmesh_2 slow
-		chk_join_nr "fullmesh test 1x2" 5 5 5
+		chk_join_nr 5 5 5
 		chk_add_nr 1 1
 	fi
 
@@ -2506,53 +2525,53 @@ fullmesh_tests()
 	# 1 non-fullmesh addr in ns1, added before the connection,
 	# 2 fullmesh addrs in ns2, added during the connection,
 	# limit max_subflows to 4.
-	if reset; then
+	if reset "fullmesh test 1x2, limited"; then
 		pm_nl_set_limits $ns1 2 4
 		pm_nl_set_limits $ns2 1 4
 		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
 		run_tests $ns1 $ns2 10.0.1.1 0 0 fullmesh_2 slow
-		chk_join_nr "fullmesh test 1x2, limited" 4 4 4
+		chk_join_nr 4 4 4
 		chk_add_nr 1 1
 	fi
 
 	# set fullmesh flag
-	if reset; then
+	if reset "set fullmesh flag test"; then
 		pm_nl_set_limits $ns1 4 4
 		pm_nl_add_endpoint $ns1 10.0.2.1 flags subflow
 		pm_nl_set_limits $ns2 4 4
 		run_tests $ns1 $ns2 10.0.1.1 0 0 1 slow fullmesh
-		chk_join_nr "set fullmesh flag test" 2 2 2
+		chk_join_nr 2 2 2
 		chk_rm_nr 0 1
 	fi
 
 	# set nofullmesh flag
-	if reset; then
+	if reset "set nofullmesh flag test"; then
 		pm_nl_set_limits $ns1 4 4
 		pm_nl_add_endpoint $ns1 10.0.2.1 flags subflow,fullmesh
 		pm_nl_set_limits $ns2 4 4
 		run_tests $ns1 $ns2 10.0.1.1 0 0 fullmesh_1 slow nofullmesh
-		chk_join_nr "set nofullmesh flag test" 2 2 2
+		chk_join_nr 2 2 2
 		chk_rm_nr 0 1
 	fi
 
 	# set backup,fullmesh flags
-	if reset; then
+	if reset "set backup,fullmesh flags test"; then
 		pm_nl_set_limits $ns1 4 4
 		pm_nl_add_endpoint $ns1 10.0.2.1 flags subflow
 		pm_nl_set_limits $ns2 4 4
 		run_tests $ns1 $ns2 10.0.1.1 0 0 1 slow backup,fullmesh
-		chk_join_nr "set backup,fullmesh flags test" 2 2 2
+		chk_join_nr 2 2 2
 		chk_prio_nr 0 1
 		chk_rm_nr 0 1
 	fi
 
 	# set nobackup,nofullmesh flags
-	if reset; then
+	if reset "set nobackup,nofullmesh flags test"; then
 		pm_nl_set_limits $ns1 4 4
 		pm_nl_set_limits $ns2 4 4
 		pm_nl_add_endpoint $ns2 10.0.2.2 flags subflow,backup,fullmesh
 		run_tests $ns1 $ns2 10.0.1.1 0 0 0 slow nobackup,nofullmesh
-		chk_join_nr "set nobackup,nofullmesh flags test" 2 2 2
+		chk_join_nr 2 2 2
 		chk_prio_nr 0 1
 		chk_rm_nr 0 1
 	fi
@@ -2577,88 +2596,86 @@ pedit_action_pkts()
 fail_tests()
 {
 	# multiple subflows
-	if reset_with_fail 2; then
+	if reset_with_fail "MP_FAIL MP_RST" 2; then
 		tc -n $ns2 qdisc add dev ns2eth1 root netem rate 20mbit delay 1
 		pm_nl_set_limits $ns1 0 1
 		pm_nl_set_limits $ns2 0 1
 		pm_nl_add_endpoint $ns2 10.0.2.2 dev ns2eth2 flags subflow
 		run_tests $ns1 $ns2 10.0.1.1 1024
-		chk_join_nr "MP_FAIL MP_RST: $(pedit_action_pkts) corrupted pkts" \
-			1 1 1 +1 +0 1 1
+		chk_join_nr 1 1 1 +1 +0 1 1 "$(pedit_action_pkts)"
 	fi
 
 	# single subflow
-	if reset_with_fail 1; then
+	if reset_with_fail "Infinite map" 1; then
 		run_tests $ns1 $ns2 10.0.1.1 128
-		chk_join_nr "Infinite map: $(pedit_action_pkts) corrupted pkts" \
-			0 0 0 +1 +0 1 0 1
+		chk_join_nr 0 0 0 +1 +0 1 0 1 "$(pedit_action_pkts)"
 	fi
 }
 
 userspace_tests()
 {
 	# userspace pm type prevents add_addr
-	if reset; then
+	if reset "userspace pm type prevents add_addr"; then
 		set_userspace_pm $ns1
 		pm_nl_set_limits $ns1 0 2
 		pm_nl_set_limits $ns2 0 2
 		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
 		run_tests $ns1 $ns2 10.0.1.1
-		chk_join_nr "userspace pm type prevents add_addr" 0 0 0
+		chk_join_nr 0 0 0
 		chk_add_nr 0 0
 	fi
 
 	# userspace pm type echoes add_addr
-	if reset; then
+	if reset "userspace pm type echoes add_addr"; then
 		set_userspace_pm $ns2
 		pm_nl_set_limits $ns1 0 2
 		pm_nl_set_limits $ns2 0 2
 		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
 		run_tests $ns1 $ns2 10.0.1.1
-		chk_join_nr "userspace pm type echoes add_addr" 0 0 0
+		chk_join_nr 0 0 0
 		chk_add_nr 1 1
 	fi
 
 	# userspace pm type rejects join
-	if reset; then
+	if reset "userspace pm type rejects join"; then
 		set_userspace_pm $ns1
 		pm_nl_set_limits $ns1 1 1
 		pm_nl_set_limits $ns2 1 1
 		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
 		run_tests $ns1 $ns2 10.0.1.1
-		chk_join_nr "userspace pm type rejects join" 1 1 0
+		chk_join_nr 1 1 0
 	fi
 
 	# userspace pm type does not send join
-	if reset; then
+	if reset "userspace pm type does not send join"; then
 		set_userspace_pm $ns2
 		pm_nl_set_limits $ns1 1 1
 		pm_nl_set_limits $ns2 1 1
 		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
 		run_tests $ns1 $ns2 10.0.1.1
-		chk_join_nr "userspace pm type does not send join" 0 0 0
+		chk_join_nr 0 0 0
 	fi
 
 	# userspace pm type prevents mp_prio
-	if reset; then
+	if reset "userspace pm type prevents mp_prio"; then
 		set_userspace_pm $ns1
 		pm_nl_set_limits $ns1 1 1
 		pm_nl_set_limits $ns2 1 1
 		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
 		run_tests $ns1 $ns2 10.0.1.1 0 0 0 slow backup
-		chk_join_nr "userspace pm type prevents mp_prio" 1 1 0
+		chk_join_nr 1 1 0
 		chk_prio_nr 0 0
 	fi
 
 	# userspace pm type prevents rm_addr
-	if reset; then
+	if reset "userspace pm type prevents rm_addr"; then
 		set_userspace_pm $ns1
 		set_userspace_pm $ns2
 		pm_nl_set_limits $ns1 0 1
 		pm_nl_set_limits $ns2 0 1
 		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
 		run_tests $ns1 $ns2 10.0.1.1 0 0 -1 slow
-		chk_join_nr "userspace pm type prevents rm_addr" 0 0 0
+		chk_join_nr 0 0 0
 		chk_rm_nr 0 0
 	fi
 }
@@ -2707,7 +2724,7 @@ usage()
 	echo "  -i use ip mptcp"
 	echo "  -h help"
 
-	echo "[test ids]"
+	echo "[test ids|names]"
 
 	exit ${ret}
 }
@@ -2775,9 +2792,9 @@ shift $((OPTIND - 1))
 
 for arg in "${@}"; do
 	if [[ "${arg}" =~ ^[0-9]+$ ]]; then
-		only_tests+=("${arg}")
+		only_tests_ids+=("${arg}")
 	else
-		usage "Unknown argument: ${arg}"
+		only_tests_names+=("${arg}")
 	fi
 done
 
-- 
2.34.1

[PATCH mptcp-next v3 08/12] selftests: mptcp: join: list failure at the end

[Matthieu Baerts]

With ~100 tests, it helps to have this summary at the end not to scroll
to find which one has failed.

It is especially interseting when looking at the output produced by the
CI where the kernel logs from the serial are mixed together.

Reviewed-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
---
 .../testing/selftests/net/mptcp/mptcp_join.sh | 89 ++++++++++++-------
 1 file changed, 57 insertions(+), 32 deletions(-)

diff --git a/tools/testing/selftests/net/mptcp/mptcp_join.sh b/tools/testing/selftests/net/mptcp/mptcp_join.sh
index c12b1baef29e..b07cbf1a80ca 100755
--- a/tools/testing/selftests/net/mptcp/mptcp_join.sh
+++ b/tools/testing/selftests/net/mptcp/mptcp_join.sh
@@ -22,6 +22,7 @@ init=0
 declare -A all_tests
 declare -a only_tests_ids
 declare -a only_tests_names
+declare -A failed_tests
 TEST_COUNT=0
 TEST_NAME=""
 nr_blank=40
@@ -302,6 +303,21 @@ reset_with_fail()
 		index 100 || exit 1
 }
 
+fail_test()
+{
+	ret=1
+	failed_tests[${TEST_COUNT}]="${TEST_NAME}"
+}
+
+get_failed_tests_ids()
+{
+	# sorted
+	local i
+	for i in "${!failed_tests[@]}"; do
+		echo "${i}"
+	done | sort -n
+}
+
 print_file_err()
 {
 	ls -l "$1" 1>&2
@@ -323,7 +339,7 @@ check_transfer()
 			echo "[ FAIL ] $what does not match (in, out):"
 			print_file_err "$in"
 			print_file_err "$out"
-			ret=1
+			fail_test
 
 			return 1
 		else
@@ -343,7 +359,7 @@ do_ping()
 	ip netns exec ${connector_ns} ping -q -c 1 $connect_addr >/dev/null
 	if [ $? -ne 0 ] ; then
 		echo "$listener_ns -> $connect_addr connectivity [ FAIL ]" 1>&2
-		ret=1
+		fail_test
 	fi
 }
 
@@ -588,7 +604,7 @@ pm_nl_check_endpoint()
 		echo "[ ok ]"
 	else
 		echo "[fail] expected '$expected_line' found '$line'"
-		ret=1
+		fail_test
 	fi
 }
 
@@ -842,7 +858,7 @@ do_transfer()
 		cat /tmp/${connector_ns}.out
 
 		cat "$capout"
-		ret=1
+		fail_test
 		return 1
 	fi
 
@@ -974,7 +990,7 @@ chk_csum_nr()
 	if [ "$count" != $csum_ns1 -a $allow_multi_errors_ns1 -eq 0 ] ||
 	   [ "$count" -lt $csum_ns1 -a $allow_multi_errors_ns1 -eq 1 ]; then
 		echo "[fail] got $count data checksum error[s] expected $csum_ns1"
-		ret=1
+		fail_test
 		dump_stats=1
 	else
 		echo -n "[ ok ]"
@@ -985,7 +1001,7 @@ chk_csum_nr()
 	if [ "$count" != $csum_ns2 -a $allow_multi_errors_ns2 -eq 0 ] ||
 	   [ "$count" -lt $csum_ns2 -a $allow_multi_errors_ns2 -eq 1 ]; then
 		echo "[fail] got $count data checksum error[s] expected $csum_ns2"
-		ret=1
+		fail_test
 		dump_stats=1
 	else
 		echo "[ ok ]"
@@ -1005,7 +1021,7 @@ chk_fail_nr()
 	[ -z "$count" ] && count=0
 	if [ "$count" != "$fail_tx" ]; then
 		echo "[fail] got $count MP_FAIL[s] TX expected $fail_tx"
-		ret=1
+		fail_test
 		dump_stats=1
 	else
 		echo -n "[ ok ]"
@@ -1016,7 +1032,7 @@ chk_fail_nr()
 	[ -z "$count" ] && count=0
 	if [ "$count" != "$fail_rx" ]; then
 		echo "[fail] got $count MP_FAIL[s] RX expected $fail_rx"
-		ret=1
+		fail_test
 		dump_stats=1
 	else
 		echo "[ ok ]"
@@ -1037,7 +1053,7 @@ chk_fclose_nr()
 	[ -z "$count" ] && count=0
 	if [ "$count" != "$fclose_tx" ]; then
 		echo "[fail] got $count MP_FASTCLOSE[s] TX expected $fclose_tx"
-		ret=1
+		fail_test
 		dump_stats=1
 	else
 		echo -n "[ ok ]"
@@ -1048,7 +1064,7 @@ chk_fclose_nr()
 	[ -z "$count" ] && count=0
 	if [ "$count" != "$fclose_rx" ]; then
 		echo "[fail] got $count MP_FASTCLOSE[s] RX expected $fclose_rx"
-		ret=1
+		fail_test
 		dump_stats=1
 	else
 		echo "[ ok ]"
@@ -1079,7 +1095,7 @@ chk_rst_nr()
 	[ -z "$count" ] && count=0
 	if [ "$count" != "$rst_tx" ]; then
 		echo "[fail] got $count MP_RST[s] TX expected $rst_tx"
-		ret=1
+		fail_test
 		dump_stats=1
 	else
 		echo -n "[ ok ]"
@@ -1090,7 +1106,7 @@ chk_rst_nr()
 	[ -z "$count" ] && count=0
 	if [ "$count" != "$rst_rx" ]; then
 		echo "[fail] got $count MP_RST[s] RX expected $rst_rx"
-		ret=1
+		fail_test
 		dump_stats=1
 	else
 		echo -n "[ ok ]"
@@ -1113,7 +1129,7 @@ chk_infi_nr()
 	[ -z "$count" ] && count=0
 	if [ "$count" != "$infi_tx" ]; then
 		echo "[fail] got $count infinite map[s] TX expected $infi_tx"
-		ret=1
+		fail_test
 		dump_stats=1
 	else
 		echo -n "[ ok ]"
@@ -1124,7 +1140,7 @@ chk_infi_nr()
 	[ -z "$count" ] && count=0
 	if [ "$count" != "$infi_rx" ]; then
 		echo "[fail] got $count infinite map[s] RX expected $infi_rx"
-		ret=1
+		fail_test
 		dump_stats=1
 	else
 		echo "[ ok ]"
@@ -1158,7 +1174,7 @@ chk_join_nr()
 	[ -z "$count" ] && count=0
 	if [ "$count" != "$syn_nr" ]; then
 		echo "[fail] got $count JOIN[s] syn expected $syn_nr"
-		ret=1
+		fail_test
 		dump_stats=1
 	else
 		echo -n "[ ok ]"
@@ -1176,7 +1192,7 @@ chk_join_nr()
 			echo -n "[ ok ]"
 		else
 			echo "[fail] got $count JOIN[s] synack expected $syn_ack_nr"
-			ret=1
+			fail_test
 			dump_stats=1
 		fi
 	else
@@ -1188,7 +1204,7 @@ chk_join_nr()
 	[ -z "$count" ] && count=0
 	if [ "$count" != "$ack_nr" ]; then
 		echo "[fail] got $count JOIN[s] ack expected $ack_nr"
-		ret=1
+		fail_test
 		dump_stats=1
 	else
 		echo "[ ok ]"
@@ -1229,7 +1245,7 @@ chk_stale_nr()
 		echo "[fail] got $stale_nr stale[s] $recover_nr recover[s], " \
 		     " expected stale in range [$stale_min..$stale_max]," \
 		     " stale-recover delta $stale_delta "
-		ret=1
+		fail_test
 		dump_stats=1
 	else
 		echo "[ ok ]"
@@ -1266,7 +1282,7 @@ chk_add_nr()
 	# add addrs options, due to retransmissions
 	if [ "$count" != "$add_nr" ] && [ "$timeout" -gt 1 -o "$count" -lt "$add_nr" ]; then
 		echo "[fail] got $count ADD_ADDR[s] expected $add_nr"
-		ret=1
+		fail_test
 		dump_stats=1
 	else
 		echo -n "[ ok ]"
@@ -1277,7 +1293,7 @@ chk_add_nr()
 	[ -z "$count" ] && count=0
 	if [ "$count" != "$echo_nr" ]; then
 		echo "[fail] got $count ADD_ADDR echo[s] expected $echo_nr"
-		ret=1
+		fail_test
 		dump_stats=1
 	else
 		echo -n "[ ok ]"
@@ -1289,7 +1305,7 @@ chk_add_nr()
 		[ -z "$count" ] && count=0
 		if [ "$count" != "$port_nr" ]; then
 			echo "[fail] got $count ADD_ADDR[s] with a port-number expected $port_nr"
-			ret=1
+			fail_test
 			dump_stats=1
 		else
 			echo "[ ok ]"
@@ -1302,7 +1318,7 @@ chk_add_nr()
 		if [ "$count" != "$syn_nr" ]; then
 			echo "[fail] got $count JOIN[s] syn with a different \
 				port-number expected $syn_nr"
-			ret=1
+			fail_test
 			dump_stats=1
 		else
 			echo -n "[ ok ]"
@@ -1315,7 +1331,7 @@ chk_add_nr()
 		if [ "$count" != "$syn_ack_nr" ]; then
 			echo "[fail] got $count JOIN[s] synack with a different \
 				port-number expected $syn_ack_nr"
-			ret=1
+			fail_test
 			dump_stats=1
 		else
 			echo -n "[ ok ]"
@@ -1328,7 +1344,7 @@ chk_add_nr()
 		if [ "$count" != "$ack_nr" ]; then
 			echo "[fail] got $count JOIN[s] ack with a different \
 				port-number expected $ack_nr"
-			ret=1
+			fail_test
 			dump_stats=1
 		else
 			echo "[ ok ]"
@@ -1341,7 +1357,7 @@ chk_add_nr()
 		if [ "$count" != "$mis_syn_nr" ]; then
 			echo "[fail] got $count JOIN[s] syn with a mismatched \
 				port-number expected $mis_syn_nr"
-			ret=1
+			fail_test
 			dump_stats=1
 		else
 			echo -n "[ ok ]"
@@ -1354,7 +1370,7 @@ chk_add_nr()
 		if [ "$count" != "$mis_ack_nr" ]; then
 			echo "[fail] got $count JOIN[s] ack with a mismatched \
 				port-number expected $mis_ack_nr"
-			ret=1
+			fail_test
 			dump_stats=1
 		else
 			echo "[ ok ]"
@@ -1399,7 +1415,7 @@ chk_rm_nr()
 	[ -z "$count" ] && count=0
 	if [ "$count" != "$rm_addr_nr" ]; then
 		echo "[fail] got $count RM_ADDR[s] expected $rm_addr_nr"
-		ret=1
+		fail_test
 		dump_stats=1
 	else
 		echo -n "[ ok ]"
@@ -1422,14 +1438,14 @@ chk_rm_nr()
 			echo "[ ok ] $suffix"
 		else
 			echo "[fail] got $count RM_SUBFLOW[s] expected in range [$rm_subflow_nr:$((rm_subflow_nr*2))]"
-			ret=1
+			fail_test
 			dump_stats=1
 		fi
 		return
 	fi
 	if [ "$count" != "$rm_subflow_nr" ]; then
 		echo "[fail] got $count RM_SUBFLOW[s] expected $rm_subflow_nr"
-		ret=1
+		fail_test
 		dump_stats=1
 	else
 		echo -n "[ ok ]"
@@ -1452,7 +1468,7 @@ chk_prio_nr()
 	[ -z "$count" ] && count=0
 	if [ "$count" != "$mp_prio_nr_tx" ]; then
 		echo "[fail] got $count MP_PRIO[s] TX expected $mp_prio_nr_tx"
-		ret=1
+		fail_test
 		dump_stats=1
 	else
 		echo -n "[ ok ]"
@@ -1463,7 +1479,7 @@ chk_prio_nr()
 	[ -z "$count" ] && count=0
 	if [ "$count" != "$mp_prio_nr_rx" ]; then
 		echo "[fail] got $count MP_PRIO[s] RX expected $mp_prio_nr_rx"
-		ret=1
+		fail_test
 		dump_stats=1
 	else
 		echo "[ ok ]"
@@ -1487,7 +1503,7 @@ chk_link_usage()
 	if [ $tx_rate -lt $((expected_rate - $tolerance)) -o \
 	     $tx_rate -gt $((expected_rate + $tolerance)) ]; then
 		echo "[fail] got $tx_rate% usage, expected $expected_rate%"
-		ret=1
+		fail_test
 	else
 		echo "[ ok ]"
 	fi
@@ -2806,4 +2822,13 @@ for subtests in "${tests[@]}"; do
 	"${subtests}"
 done
 
+if [ ${ret} -ne 0 ]; then
+	echo
+	echo "${#failed_tests[@]} failure(s) has(ve) been detected:"
+	for i in $(get_failed_tests_ids); do
+		echo -e "\t- ${i}: ${failed_tests[${i}]}"
+	done
+	echo
+fi
+
 exit $ret
-- 
2.34.1

Re: [PATCH mptcp-next v3 08/12] selftests: mptcp: join: list failure at the end

[Geliang Tang]

Hi Matt,

Matthieu Baerts <matthieu.baerts@tessares.net> 于2022年2月24日周四 21:56写道：
>
> With ~100 tests, it helps to have this summary at the end not to scroll
> to find which one has failed.
>
> It is especially interseting when looking at the output produced by the
> CI where the kernel logs from the serial are mixed together.
>
> Reviewed-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
> Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
> ---
>  .../testing/selftests/net/mptcp/mptcp_join.sh | 89 ++++++++++++-------
>  1 file changed, 57 insertions(+), 32 deletions(-)
>
> diff --git a/tools/testing/selftests/net/mptcp/mptcp_join.sh b/tools/testing/selftests/net/mptcp/mptcp_join.sh
> index c12b1baef29e..b07cbf1a80ca 100755
> --- a/tools/testing/selftests/net/mptcp/mptcp_join.sh
> +++ b/tools/testing/selftests/net/mptcp/mptcp_join.sh
> @@ -22,6 +22,7 @@ init=0
>  declare -A all_tests
>  declare -a only_tests_ids
>  declare -a only_tests_names
> +declare -A failed_tests
>  TEST_COUNT=0
>  TEST_NAME=""
>  nr_blank=40
> @@ -302,6 +303,21 @@ reset_with_fail()
>                 index 100 || exit 1
>  }
>
> +fail_test()
> +{
> +       ret=1
> +       failed_tests[${TEST_COUNT}]="${TEST_NAME}"
> +}
> +
> +get_failed_tests_ids()
> +{
> +       # sorted
> +       local i
> +       for i in "${!failed_tests[@]}"; do
> +               echo "${i}"
> +       done | sort -n
> +}
> +
>  print_file_err()
>  {
>         ls -l "$1" 1>&2
> @@ -323,7 +339,7 @@ check_transfer()
>                         echo "[ FAIL ] $what does not match (in, out):"
>                         print_file_err "$in"
>                         print_file_err "$out"
> -                       ret=1
> +                       fail_test
>
>                         return 1
>                 else
> @@ -343,7 +359,7 @@ do_ping()
>         ip netns exec ${connector_ns} ping -q -c 1 $connect_addr >/dev/null
>         if [ $? -ne 0 ] ; then
>                 echo "$listener_ns -> $connect_addr connectivity [ FAIL ]" 1>&2
> -               ret=1
> +               fail_test
>         fi
>  }
>
> @@ -588,7 +604,7 @@ pm_nl_check_endpoint()
>                 echo "[ ok ]"
>         else
>                 echo "[fail] expected '$expected_line' found '$line'"
> -               ret=1
> +               fail_test
>         fi
>  }
>
> @@ -842,7 +858,7 @@ do_transfer()
>                 cat /tmp/${connector_ns}.out
>
>                 cat "$capout"
> -               ret=1
> +               fail_test
>                 return 1
>         fi
>
> @@ -974,7 +990,7 @@ chk_csum_nr()
>         if [ "$count" != $csum_ns1 -a $allow_multi_errors_ns1 -eq 0 ] ||
>            [ "$count" -lt $csum_ns1 -a $allow_multi_errors_ns1 -eq 1 ]; then
>                 echo "[fail] got $count data checksum error[s] expected $csum_ns1"
> -               ret=1
> +               fail_test
>                 dump_stats=1
>         else
>                 echo -n "[ ok ]"
> @@ -985,7 +1001,7 @@ chk_csum_nr()
>         if [ "$count" != $csum_ns2 -a $allow_multi_errors_ns2 -eq 0 ] ||
>            [ "$count" -lt $csum_ns2 -a $allow_multi_errors_ns2 -eq 1 ]; then
>                 echo "[fail] got $count data checksum error[s] expected $csum_ns2"
> -               ret=1
> +               fail_test
>                 dump_stats=1
>         else
>                 echo "[ ok ]"
> @@ -1005,7 +1021,7 @@ chk_fail_nr()
>         [ -z "$count" ] && count=0
>         if [ "$count" != "$fail_tx" ]; then
>                 echo "[fail] got $count MP_FAIL[s] TX expected $fail_tx"
> -               ret=1
> +               fail_test
>                 dump_stats=1
>         else
>                 echo -n "[ ok ]"
> @@ -1016,7 +1032,7 @@ chk_fail_nr()
>         [ -z "$count" ] && count=0
>         if [ "$count" != "$fail_rx" ]; then
>                 echo "[fail] got $count MP_FAIL[s] RX expected $fail_rx"
> -               ret=1
> +               fail_test
>                 dump_stats=1
>         else
>                 echo "[ ok ]"
> @@ -1037,7 +1053,7 @@ chk_fclose_nr()
>         [ -z "$count" ] && count=0
>         if [ "$count" != "$fclose_tx" ]; then
>                 echo "[fail] got $count MP_FASTCLOSE[s] TX expected $fclose_tx"
> -               ret=1
> +               fail_test
>                 dump_stats=1
>         else
>                 echo -n "[ ok ]"
> @@ -1048,7 +1064,7 @@ chk_fclose_nr()
>         [ -z "$count" ] && count=0
>         if [ "$count" != "$fclose_rx" ]; then
>                 echo "[fail] got $count MP_FASTCLOSE[s] RX expected $fclose_rx"
> -               ret=1
> +               fail_test
>                 dump_stats=1
>         else
>                 echo "[ ok ]"
> @@ -1079,7 +1095,7 @@ chk_rst_nr()
>         [ -z "$count" ] && count=0
>         if [ "$count" != "$rst_tx" ]; then
>                 echo "[fail] got $count MP_RST[s] TX expected $rst_tx"
> -               ret=1
> +               fail_test
>                 dump_stats=1
>         else
>                 echo -n "[ ok ]"
> @@ -1090,7 +1106,7 @@ chk_rst_nr()
>         [ -z "$count" ] && count=0
>         if [ "$count" != "$rst_rx" ]; then
>                 echo "[fail] got $count MP_RST[s] RX expected $rst_rx"
> -               ret=1
> +               fail_test
>                 dump_stats=1
>         else
>                 echo -n "[ ok ]"
> @@ -1113,7 +1129,7 @@ chk_infi_nr()
>         [ -z "$count" ] && count=0
>         if [ "$count" != "$infi_tx" ]; then
>                 echo "[fail] got $count infinite map[s] TX expected $infi_tx"
> -               ret=1
> +               fail_test
>                 dump_stats=1
>         else
>                 echo -n "[ ok ]"
> @@ -1124,7 +1140,7 @@ chk_infi_nr()
>         [ -z "$count" ] && count=0
>         if [ "$count" != "$infi_rx" ]; then
>                 echo "[fail] got $count infinite map[s] RX expected $infi_rx"
> -               ret=1
> +               fail_test
>                 dump_stats=1
>         else
>                 echo "[ ok ]"
> @@ -1158,7 +1174,7 @@ chk_join_nr()
>         [ -z "$count" ] && count=0
>         if [ "$count" != "$syn_nr" ]; then
>                 echo "[fail] got $count JOIN[s] syn expected $syn_nr"
> -               ret=1
> +               fail_test
>                 dump_stats=1
>         else
>                 echo -n "[ ok ]"
> @@ -1176,7 +1192,7 @@ chk_join_nr()
>                         echo -n "[ ok ]"
>                 else
>                         echo "[fail] got $count JOIN[s] synack expected $syn_ack_nr"
> -                       ret=1
> +                       fail_test
>                         dump_stats=1
>                 fi
>         else
> @@ -1188,7 +1204,7 @@ chk_join_nr()
>         [ -z "$count" ] && count=0
>         if [ "$count" != "$ack_nr" ]; then
>                 echo "[fail] got $count JOIN[s] ack expected $ack_nr"
> -               ret=1
> +               fail_test
>                 dump_stats=1
>         else
>                 echo "[ ok ]"
> @@ -1229,7 +1245,7 @@ chk_stale_nr()
>                 echo "[fail] got $stale_nr stale[s] $recover_nr recover[s], " \
>                      " expected stale in range [$stale_min..$stale_max]," \
>                      " stale-recover delta $stale_delta "
> -               ret=1
> +               fail_test
>                 dump_stats=1
>         else
>                 echo "[ ok ]"
> @@ -1266,7 +1282,7 @@ chk_add_nr()
>         # add addrs options, due to retransmissions
>         if [ "$count" != "$add_nr" ] && [ "$timeout" -gt 1 -o "$count" -lt "$add_nr" ]; then
>                 echo "[fail] got $count ADD_ADDR[s] expected $add_nr"
> -               ret=1
> +               fail_test
>                 dump_stats=1
>         else
>                 echo -n "[ ok ]"
> @@ -1277,7 +1293,7 @@ chk_add_nr()
>         [ -z "$count" ] && count=0
>         if [ "$count" != "$echo_nr" ]; then
>                 echo "[fail] got $count ADD_ADDR echo[s] expected $echo_nr"
> -               ret=1
> +               fail_test
>                 dump_stats=1
>         else
>                 echo -n "[ ok ]"
> @@ -1289,7 +1305,7 @@ chk_add_nr()
>                 [ -z "$count" ] && count=0
>                 if [ "$count" != "$port_nr" ]; then
>                         echo "[fail] got $count ADD_ADDR[s] with a port-number expected $port_nr"
> -                       ret=1
> +                       fail_test
>                         dump_stats=1
>                 else
>                         echo "[ ok ]"
> @@ -1302,7 +1318,7 @@ chk_add_nr()
>                 if [ "$count" != "$syn_nr" ]; then
>                         echo "[fail] got $count JOIN[s] syn with a different \
>                                 port-number expected $syn_nr"
> -                       ret=1
> +                       fail_test
>                         dump_stats=1
>                 else
>                         echo -n "[ ok ]"
> @@ -1315,7 +1331,7 @@ chk_add_nr()
>                 if [ "$count" != "$syn_ack_nr" ]; then
>                         echo "[fail] got $count JOIN[s] synack with a different \
>                                 port-number expected $syn_ack_nr"
> -                       ret=1
> +                       fail_test
>                         dump_stats=1
>                 else
>                         echo -n "[ ok ]"
> @@ -1328,7 +1344,7 @@ chk_add_nr()
>                 if [ "$count" != "$ack_nr" ]; then
>                         echo "[fail] got $count JOIN[s] ack with a different \
>                                 port-number expected $ack_nr"
> -                       ret=1
> +                       fail_test
>                         dump_stats=1
>                 else
>                         echo "[ ok ]"
> @@ -1341,7 +1357,7 @@ chk_add_nr()
>                 if [ "$count" != "$mis_syn_nr" ]; then
>                         echo "[fail] got $count JOIN[s] syn with a mismatched \
>                                 port-number expected $mis_syn_nr"
> -                       ret=1
> +                       fail_test
>                         dump_stats=1
>                 else
>                         echo -n "[ ok ]"
> @@ -1354,7 +1370,7 @@ chk_add_nr()
>                 if [ "$count" != "$mis_ack_nr" ]; then
>                         echo "[fail] got $count JOIN[s] ack with a mismatched \
>                                 port-number expected $mis_ack_nr"
> -                       ret=1
> +                       fail_test
>                         dump_stats=1
>                 else
>                         echo "[ ok ]"
> @@ -1399,7 +1415,7 @@ chk_rm_nr()
>         [ -z "$count" ] && count=0
>         if [ "$count" != "$rm_addr_nr" ]; then
>                 echo "[fail] got $count RM_ADDR[s] expected $rm_addr_nr"
> -               ret=1
> +               fail_test
>                 dump_stats=1
>         else
>                 echo -n "[ ok ]"
> @@ -1422,14 +1438,14 @@ chk_rm_nr()
>                         echo "[ ok ] $suffix"
>                 else
>                         echo "[fail] got $count RM_SUBFLOW[s] expected in range [$rm_subflow_nr:$((rm_subflow_nr*2))]"
> -                       ret=1
> +                       fail_test
>                         dump_stats=1
>                 fi
>                 return
>         fi
>         if [ "$count" != "$rm_subflow_nr" ]; then
>                 echo "[fail] got $count RM_SUBFLOW[s] expected $rm_subflow_nr"
> -               ret=1
> +               fail_test
>                 dump_stats=1
>         else
>                 echo -n "[ ok ]"
> @@ -1452,7 +1468,7 @@ chk_prio_nr()
>         [ -z "$count" ] && count=0
>         if [ "$count" != "$mp_prio_nr_tx" ]; then
>                 echo "[fail] got $count MP_PRIO[s] TX expected $mp_prio_nr_tx"
> -               ret=1
> +               fail_test
>                 dump_stats=1
>         else
>                 echo -n "[ ok ]"
> @@ -1463,7 +1479,7 @@ chk_prio_nr()
>         [ -z "$count" ] && count=0
>         if [ "$count" != "$mp_prio_nr_rx" ]; then
>                 echo "[fail] got $count MP_PRIO[s] RX expected $mp_prio_nr_rx"
> -               ret=1
> +               fail_test
>                 dump_stats=1
>         else
>                 echo "[ ok ]"
> @@ -1487,7 +1503,7 @@ chk_link_usage()
>         if [ $tx_rate -lt $((expected_rate - $tolerance)) -o \
>              $tx_rate -gt $((expected_rate + $tolerance)) ]; then
>                 echo "[fail] got $tx_rate% usage, expected $expected_rate%"
> -               ret=1
> +               fail_test
>         else
>                 echo "[ ok ]"
>         fi
> @@ -2806,4 +2822,13 @@ for subtests in "${tests[@]}"; do
>         "${subtests}"
>  done
>
> +if [ ${ret} -ne 0 ]; then
> +       echo
> +       echo "${#failed_tests[@]} failure(s) has(ve) been detected:"

How about using:

        echo -e "\n${#failed_tests[@]} failure(s) has(ve) been detected:"

> +       for i in $(get_failed_tests_ids); do
> +               echo -e "\t- ${i}: ${failed_tests[${i}]}"
> +       done
> +       echo
> +fi
> +
>  exit $ret
> --
> 2.34.1
>
>

Re: [PATCH mptcp-next v3 08/12] selftests: mptcp: join: list failure at the end

[Matthieu Baerts]

Hi Geliang,

On 24/02/2022 15:19, Geliang Tang wrote:
> Matthieu Baerts <matthieu.baerts@tessares.net> 于2022年2月24日周四 21:56写道：

(...)

>> @@ -2806,4 +2822,13 @@ for subtests in "${tests[@]}"; do
>>         "${subtests}"
>>  done
>>
>> +if [ ${ret} -ne 0 ]; then
>> +       echo
>> +       echo "${#failed_tests[@]} failure(s) has(ve) been detected:"
> 
> How about using:
> 
>         echo -e "\n${#failed_tests[@]} failure(s) has(ve) been detected:"

Sure I can. But then I would prefer to use 'printf'.

In fact I added an "echo" before because I added an "echo" at the end.

But I can remove the extra echo and use "-e \n" if we prefer.

>> +       for i in $(get_failed_tests_ids); do
>> +               echo -e "\t- ${i}: ${failed_tests[${i}]}"
>> +       done
>> +       echo
>> +fi
>> +
>>  exit $ret

Cheers,
Matt
-- 
Tessares | Belgium | Hybrid Access Solutions
www.tessares.net

[PATCH mptcp-next v3 09/12] selftests: mptcp: join: clarify local/global vars

[Matthieu Baerts]

Some vars are redefined in different places. Best to avoid this
classical Bash pitfall where variables are accidentally overridden by
other functions because the proper scope has not been defined.

Most issues are with loops: typically 'i' is used in for-loops but if it
is not global, calling a function from a for-loop also doing a for-loop
with the same non local 'i' variable causes troubles because the first
'i' will be assigned to another value. To prevent such issues, the
iterator variable is now declared as local just before the loop. If it
is always done like this, issues are avoided.

To distinct between local and non local variables, all non local ones
are defined at the beginning of the script. The others are now defined
with the "local" keyword.

Reviewed-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
---

Notes:
    v2:
      - non local variables no longer have capital letter: this can be useful but
        create a lot of modifications everywhere, making backports harders.
      - add missing local
      - explicitly define a 'local' with the iterator before 'for' and 'while' loops

 .../testing/selftests/net/mptcp/mptcp_join.sh | 133 +++++++++++-------
 1 file changed, 82 insertions(+), 51 deletions(-)

diff --git a/tools/testing/selftests/net/mptcp/mptcp_join.sh b/tools/testing/selftests/net/mptcp/mptcp_join.sh
index b07cbf1a80ca..f5e17cd2a7df 100755
--- a/tools/testing/selftests/net/mptcp/mptcp_join.sh
+++ b/tools/testing/selftests/net/mptcp/mptcp_join.sh
@@ -9,6 +9,9 @@ cin=""
 cinfail=""
 cinsent=""
 cout=""
+capout=""
+ns1=""
+ns2=""
 ksft_skip=4
 timeout_poll=30
 timeout_test=$((timeout_poll * 2 + 1))
@@ -51,12 +54,14 @@ init_partial()
 {
 	capout=$(mktemp)
 
+	local rndh
 	rndh=$(mktemp -u XXXXXX)
 
 	ns1="ns1-$rndh"
 	ns2="ns2-$rndh"
 
-	for netns in "$ns1" "$ns2";do
+	local netns
+	for netns in "$ns1" "$ns2"; do
 		ip netns add $netns || exit $ksft_skip
 		ip -net $netns link set lo up
 		ip netns exec $netns sysctl -q net.mptcp.enabled=1
@@ -78,6 +83,7 @@ init_partial()
 	# ns1eth3    ns2eth3
 	# ns1eth4    ns2eth4
 
+	local i
 	for i in `seq 1 4`; do
 		ip link add ns1eth$i netns "$ns1" type veth peer name ns2eth$i netns "$ns2"
 		ip -net "$ns1" addr add 10.0.$i.1/24 dev ns1eth$i
@@ -96,6 +102,7 @@ init_partial()
 
 init_shapers()
 {
+	local i
 	for i in `seq 1 4`; do
 		tc -n $ns1 qdisc add dev ns1eth$i root netem rate 20mbit delay 1
 		tc -n $ns2 qdisc add dev ns2eth$i root netem rate 20mbit delay 1
@@ -106,6 +113,7 @@ cleanup_partial()
 {
 	rm -f "$capout"
 
+	local netns
 	for netns in "$ns1" "$ns2"; do
 		ip netns del $netns
 		rm -f /tmp/$netns.{nstat,out}
@@ -202,7 +210,8 @@ reset_with_cookies()
 {
 	reset "${1}" || return 1
 
-	for netns in "$ns1" "$ns2";do
+	local netns
+	for netns in "$ns1" "$ns2"; do
 		ip netns exec $netns sysctl -q net.ipv4.tcp_syncookies=2
 	done
 }
@@ -327,10 +336,11 @@ print_file_err()
 
 check_transfer()
 {
-	in=$1
-	out=$2
-	what=$3
+	local in=$1
+	local out=$2
+	local what=$3
 
+	local line
 	cmp -l "$in" "$out" | while read line; do
 		local arr=($line)
 
@@ -352,9 +362,9 @@ check_transfer()
 
 do_ping()
 {
-	listener_ns="$1"
-	connector_ns="$2"
-	connect_addr="$3"
+	local listener_ns="$1"
+	local connector_ns="$2"
+	local connect_addr="$3"
 
 	ip netns exec ${connector_ns} ping -q -c 1 $connect_addr >/dev/null
 	if [ $? -ne 0 ] ; then
@@ -365,15 +375,16 @@ do_ping()
 
 link_failure()
 {
-	ns="$1"
+	local ns="$1"
 
 	if [ -z "$FAILING_LINKS" ]; then
 		l=$((RANDOM%4))
 		FAILING_LINKS=$((l+1))
 	fi
 
+	local l
 	for l in $FAILING_LINKS; do
-		veth="ns1eth$l"
+		local veth="ns1eth$l"
 		ip -net "$ns" link set "$veth" down
 	done
 }
@@ -390,9 +401,10 @@ wait_local_port_listen()
 	local listener_ns="${1}"
 	local port="${2}"
 
-	local port_hex i
-
+	local port_hex
 	port_hex="$(printf "%04X" "${port}")"
+
+	local i
 	for i in $(seq 10); do
 		ip netns exec "${listener_ns}" cat /proc/net/tcp* | \
 			awk "BEGIN {rc=1} {if (\$2 ~ /:${port_hex}\$/ && \$4 ~ /0A/) {rc=0; exit}} END {exit rc}" &&
@@ -403,7 +415,7 @@ wait_local_port_listen()
 
 rm_addr_count()
 {
-	ns=${1}
+	local ns=${1}
 
 	ip netns exec ${ns} nstat -as | grep MPTcpExtRmAddr | awk '{print $2}'
 }
@@ -414,8 +426,8 @@ wait_rm_addr()
 	local ns="${1}"
 	local old_cnt="${2}"
 	local cnt
-	local i
 
+	local i
 	for i in $(seq 10); do
 		cnt=$(rm_addr_count ${ns})
 		[ "$cnt" = "${old_cnt}" ] || break
@@ -455,12 +467,13 @@ pm_nl_add_endpoint()
 {
 	local ns=$1
 	local addr=$2
-	local flags
-	local port
-	local dev
-	local id
+	local flags _flags
+	local port _port
+	local dev _dev
+	local id _id
 	local nr=2
 
+	local p
 	for p in $@
 	do
 		if [ $p = "flags" ]; then
@@ -610,24 +623,26 @@ pm_nl_check_endpoint()
 
 do_transfer()
 {
-	listener_ns="$1"
-	connector_ns="$2"
-	cl_proto="$3"
-	srv_proto="$4"
-	connect_addr="$5"
-	test_link_fail="$6"
-	addr_nr_ns1="$7"
-	addr_nr_ns2="$8"
-	speed="$9"
-	sflags="${10}"
+	local listener_ns="$1"
+	local connector_ns="$2"
+	local cl_proto="$3"
+	local srv_proto="$4"
+	local connect_addr="$5"
+	local test_link_fail="$6"
+	local addr_nr_ns1="$7"
+	local addr_nr_ns2="$8"
+	local speed="$9"
+	local sflags="${10}"
 
-	port=$((10000+$TEST_COUNT-1))
+	local port=$((10000 + TEST_COUNT - 1))
+	local cappid
 
 	:> "$cout"
 	:> "$sout"
 	:> "$capout"
 
 	if [ $capture -eq 1 ]; then
+		local capuser
 		if [ -z $SUDO_USER ] ; then
 			capuser=""
 		else
@@ -681,7 +696,7 @@ do_transfer()
 				./mptcp_connect -t ${timeout_poll} -l -p $port -s ${srv_proto} \
 					$extra_args ${local_addr} < "$sin" > "$sout" &
 	fi
-	spid=$!
+	local spid=$!
 
 	wait_local_port_listen "${listener_ns}" "${port}"
 
@@ -704,15 +719,16 @@ do_transfer()
 					./mptcp_connect -t ${timeout_poll} -p $port -s ${cl_proto} \
 						$extra_args $connect_addr > "$cout" &
 	fi
-	cpid=$!
+	local cpid=$!
 
 	# let the mptcp subflow be established in background before
 	# do endpoint manipulation
 	[ $addr_nr_ns1 = "0" -a $addr_nr_ns2 = "0" ] || sleep 1
 
 	if [ $addr_nr_ns1 -gt 0 ]; then
+		local counter=2
+		local add_nr_ns1
 		let add_nr_ns1=addr_nr_ns1
-		counter=2
 		while [ $add_nr_ns1 -gt 0 ]; do
 			local addr
 			if is_v6 "${connect_addr}"; then
@@ -725,13 +741,16 @@ do_transfer()
 			let add_nr_ns1-=1
 		done
 	elif [ $addr_nr_ns1 -lt 0 ]; then
+		local rm_nr_ns1
 		let rm_nr_ns1=-addr_nr_ns1
 		if [ $rm_nr_ns1 -lt 8 ]; then
-			counter=0
+			local counter=0
+			local line
 			pm_nl_show_endpoints ${listener_ns} | while read line; do
 				local arr=($line)
 				local nr=0
 
+				local i
 				for i in ${arr[@]}; do
 					if [ $i = "id" ]; then
 						if [ $counter -eq $rm_nr_ns1 ]; then
@@ -753,7 +772,7 @@ do_transfer()
 		fi
 	fi
 
-	flags="subflow"
+	local flags="subflow"
 	if [[ "${addr_nr_ns2}" = "fullmesh_"* ]]; then
 		flags="${flags},fullmesh"
 		addr_nr_ns2=${addr_nr_ns2:9}
@@ -764,8 +783,9 @@ do_transfer()
 	[ $addr_nr_ns1 -gt 0 -a $addr_nr_ns2 -lt 0 ] && sleep 1
 
 	if [ $addr_nr_ns2 -gt 0 ]; then
+		local add_nr_ns2
 		let add_nr_ns2=addr_nr_ns2
-		counter=3
+		local counter=3
 		while [ $add_nr_ns2 -gt 0 ]; do
 			local addr
 			if is_v6 "${connect_addr}"; then
@@ -778,18 +798,21 @@ do_transfer()
 			let add_nr_ns2-=1
 		done
 	elif [ $addr_nr_ns2 -lt 0 ]; then
-		let rm_nr_ns2=-addr_nr_ns2
+		local rm_nr_ns2
 		if [ $rm_nr_ns2 -lt 8 ]; then
-			counter=0
+			local counter=0
+			local line
 			pm_nl_show_endpoints ${connector_ns} | while read line; do
 				local arr=($line)
 				local nr=0
 
+				local i
 				for i in ${arr[@]}; do
 					if [ $i = "id" ]; then
 						if [ $counter -eq $rm_nr_ns2 ]; then
 							break
 						fi
+						local id rm_addr
 						# rm_addr are serialized, allow the previous one to
 						# complete
 						id=${arr[$nr+1]}
@@ -816,12 +839,16 @@ do_transfer()
 
 	if [ ! -z $sflags ]; then
 		sleep 1
+
+		local netns
 		for netns in "$ns1" "$ns2"; do
+			local line
 			pm_nl_show_endpoints $netns | while read line; do
 				local arr=($line)
 				local nr=0
 				local id
 
+				local i
 				for i in ${arr[@]}; do
 					if [ $i = "id" ]; then
 						id=${arr[$nr+1]}
@@ -834,9 +861,9 @@ do_transfer()
 	fi
 
 	wait $cpid
-	retc=$?
+	local retc=$?
 	wait $spid
-	rets=$?
+	local rets=$?
 
 	if [ $capture -eq 1 ]; then
 	    sleep 1
@@ -886,9 +913,9 @@ do_transfer()
 
 make_file()
 {
-	name=$1
-	who=$2
-	size=$3
+	local name=$1
+	local who=$2
+	local size=$3
 
 	dd if=/dev/urandom of="$name" bs=1024 count=$size 2> /dev/null
 	echo -e "\nMPTCP_TEST_FILE_END_MARKER" >> "$name"
@@ -898,14 +925,16 @@ make_file()
 
 run_tests()
 {
-	listener_ns="$1"
-	connector_ns="$2"
-	connect_addr="$3"
-	test_linkfail="${4:-0}"
-	addr_nr_ns1="${5:-0}"
-	addr_nr_ns2="${6:-0}"
-	speed="${7:-fast}"
-	sflags="${8:-""}"
+	local listener_ns="$1"
+	local connector_ns="$2"
+	local connect_addr="$3"
+	local test_linkfail="${4:-0}"
+	local addr_nr_ns1="${5:-0}"
+	local addr_nr_ns2="${6:-0}"
+	local speed="${7:-fast}"
+	local sflags="${8:-""}"
+
+	local size
 
 	# The values above 2 are reused to make test files
 	# with the given sizes (KB)
@@ -1516,7 +1545,9 @@ wait_attempt_fail()
 	local ns=$1
 
 	while [ $time -lt $timeout_ms ]; do
-		local cnt=$(ip netns exec $ns nstat -as TcpAttemptFails | grep TcpAttemptFails | awk '{print $2}')
+		local cnt
+
+		cnt=$(ip netns exec $ns nstat -as TcpAttemptFails | grep TcpAttemptFails | awk '{print $2}')
 
 		[ "$cnt" = 1 ] && return 1
 		time=$((time + 100))
-- 
2.34.1

[PATCH mptcp-next v3 10/12] selftests: mptcp: join: avoid backquotes

[Matthieu Baerts]

As explained on ShellCheck's wiki [1], it is recommended to avoid
backquotes `...` in favour of parenthesis $(...):

> Backtick command substitution `...` is legacy syntax with several
> issues.
>
> - It has a series of undefined behaviors related to quoting in POSIX.
> - It imposes a custom escaping mode with surprising results.
> - It's exceptionally hard to nest.
>
> $(...) command substitution has none of these problems, and is
> therefore strongly encouraged.

[1] https://www.shellcheck.net/wiki/SC2006

Reviewed-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
---
 .../testing/selftests/net/mptcp/mptcp_join.sh | 66 ++++++++++---------
 1 file changed, 34 insertions(+), 32 deletions(-)

diff --git a/tools/testing/selftests/net/mptcp/mptcp_join.sh b/tools/testing/selftests/net/mptcp/mptcp_join.sh
index f5e17cd2a7df..f61c3804f5e0 100755
--- a/tools/testing/selftests/net/mptcp/mptcp_join.sh
+++ b/tools/testing/selftests/net/mptcp/mptcp_join.sh
@@ -84,7 +84,7 @@ init_partial()
 	# ns1eth4    ns2eth4
 
 	local i
-	for i in `seq 1 4`; do
+	for i in $(seq 1 4); do
 		ip link add ns1eth$i netns "$ns1" type veth peer name ns2eth$i netns "$ns2"
 		ip -net "$ns1" addr add 10.0.$i.1/24 dev ns1eth$i
 		ip -net "$ns1" addr add dead:beef:$i::1/64 dev ns1eth$i nodad
@@ -103,7 +103,7 @@ init_partial()
 init_shapers()
 {
 	local i
-	for i in `seq 1 4`; do
+	for i in $(seq 1 4); do
 		tc -n $ns1 qdisc add dev ns1eth$i root netem rate 20mbit delay 1
 		tc -n $ns2 qdisc add dev ns2eth$i root netem rate 20mbit delay 1
 	done
@@ -1014,7 +1014,7 @@ chk_csum_nr()
 		echo -n "   "
 	fi
 	printf " %-36s %s" "$msg" "sum"
-	count=`ip netns exec $ns1 nstat -as | grep MPTcpExtDataCsumErr | awk '{print $2}'`
+	count=$(ip netns exec $ns1 nstat -as | grep MPTcpExtDataCsumErr | awk '{print $2}')
 	[ -z "$count" ] && count=0
 	if [ "$count" != $csum_ns1 -a $allow_multi_errors_ns1 -eq 0 ] ||
 	   [ "$count" -lt $csum_ns1 -a $allow_multi_errors_ns1 -eq 1 ]; then
@@ -1025,7 +1025,7 @@ chk_csum_nr()
 		echo -n "[ ok ]"
 	fi
 	echo -n " - csum  "
-	count=`ip netns exec $ns2 nstat -as | grep MPTcpExtDataCsumErr | awk '{print $2}'`
+	count=$(ip netns exec $ns2 nstat -as | grep MPTcpExtDataCsumErr | awk '{print $2}')
 	[ -z "$count" ] && count=0
 	if [ "$count" != $csum_ns2 -a $allow_multi_errors_ns2 -eq 0 ] ||
 	   [ "$count" -lt $csum_ns2 -a $allow_multi_errors_ns2 -eq 1 ]; then
@@ -1046,7 +1046,7 @@ chk_fail_nr()
 	local dump_stats
 
 	printf "%-${nr_blank}s %s" " " "ftx"
-	count=`ip netns exec $ns1 nstat -as | grep MPTcpExtMPFailTx | awk '{print $2}'`
+	count=$(ip netns exec $ns1 nstat -as | grep MPTcpExtMPFailTx | awk '{print $2}')
 	[ -z "$count" ] && count=0
 	if [ "$count" != "$fail_tx" ]; then
 		echo "[fail] got $count MP_FAIL[s] TX expected $fail_tx"
@@ -1057,7 +1057,7 @@ chk_fail_nr()
 	fi
 
 	echo -n " - failrx"
-	count=`ip netns exec $ns2 nstat -as | grep MPTcpExtMPFailRx | awk '{print $2}'`
+	count=$(ip netns exec $ns2 nstat -as | grep MPTcpExtMPFailRx | awk '{print $2}')
 	[ -z "$count" ] && count=0
 	if [ "$count" != "$fail_rx" ]; then
 		echo "[fail] got $count MP_FAIL[s] RX expected $fail_rx"
@@ -1199,7 +1199,7 @@ chk_join_nr()
 	fi
 
 	printf "%03u %-36s %s" "${TEST_COUNT}" "${title}" "syn"
-	count=`ip netns exec $ns1 nstat -as | grep MPTcpExtMPJoinSynRx | awk '{print $2}'`
+	count=$(ip netns exec $ns1 nstat -as | grep MPTcpExtMPJoinSynRx | awk '{print $2}')
 	[ -z "$count" ] && count=0
 	if [ "$count" != "$syn_nr" ]; then
 		echo "[fail] got $count JOIN[s] syn expected $syn_nr"
@@ -1210,8 +1210,8 @@ chk_join_nr()
 	fi
 
 	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 $2}'`
+	with_cookie=$(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
 		# simult connections exceeding the limit with cookie enabled could go up to
@@ -1229,7 +1229,7 @@ chk_join_nr()
 	fi
 
 	echo -n " - ack"
-	count=`ip netns exec $ns1 nstat -as | grep MPTcpExtMPJoinAckRx | awk '{print $2}'`
+	count=$(ip netns exec $ns1 nstat -as | grep MPTcpExtMPJoinAckRx | awk '{print $2}')
 	[ -z "$count" ] && count=0
 	if [ "$count" != "$ack_nr" ]; then
 		echo "[fail] got $count JOIN[s] ack expected $ack_nr"
@@ -1263,9 +1263,9 @@ chk_stale_nr()
 	local recover_nr
 
 	printf "%-${nr_blank}s %-18s" " " "stale"
-	stale_nr=`ip netns exec $ns nstat -as | grep MPTcpExtSubflowStale | awk '{print $2}'`
+	stale_nr=$(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 $2}'`
+	recover_nr=$(ip netns exec $ns nstat -as | grep MPTcpExtSubflowRecover | awk '{print $2}')
 	[ -z "$recover_nr" ] && recover_nr=0
 
 	if [ $stale_nr -lt $stale_min ] ||
@@ -1301,10 +1301,10 @@ chk_add_nr()
 	local dump_stats
 	local timeout
 
-	timeout=`ip netns exec $ns1 sysctl -n net.mptcp.add_addr_timeout`
+	timeout=$(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 $2}'`
+	count=$(ip netns exec $ns2 nstat -as MPTcpExtAddAddr | grep MPTcpExtAddAddr | awk '{print $2}')
 	[ -z "$count" ] && count=0
 
 	# if the test configured a short timeout tolerate greater then expected
@@ -1318,7 +1318,7 @@ chk_add_nr()
 	fi
 
 	echo -n " - echo  "
-	count=`ip netns exec $ns1 nstat -as | grep MPTcpExtEchoAdd | awk '{print $2}'`
+	count=$(ip netns exec $ns1 nstat -as | grep MPTcpExtEchoAdd | awk '{print $2}')
 	[ -z "$count" ] && count=0
 	if [ "$count" != "$echo_nr" ]; then
 		echo "[fail] got $count ADD_ADDR echo[s] expected $echo_nr"
@@ -1330,7 +1330,7 @@ chk_add_nr()
 
 	if [ $port_nr -gt 0 ]; then
 		echo -n " - pt "
-		count=`ip netns exec $ns2 nstat -as | grep MPTcpExtPortAdd | awk '{print $2}'`
+		count=$(ip netns exec $ns2 nstat -as | grep MPTcpExtPortAdd | awk '{print $2}')
 		[ -z "$count" ] && count=0
 		if [ "$count" != "$port_nr" ]; then
 			echo "[fail] got $count ADD_ADDR[s] with a port-number expected $port_nr"
@@ -1341,8 +1341,8 @@ chk_add_nr()
 		fi
 
 		printf "%-${nr_blank}s %s" " " "syn"
-		count=`ip netns exec $ns1 nstat -as | grep MPTcpExtMPJoinPortSynRx |
-			awk '{print $2}'`
+		count=$(ip netns exec $ns1 nstat -as | grep MPTcpExtMPJoinPortSynRx |
+			awk '{print $2}')
 		[ -z "$count" ] && count=0
 		if [ "$count" != "$syn_nr" ]; then
 			echo "[fail] got $count JOIN[s] syn with a different \
@@ -1354,8 +1354,8 @@ chk_add_nr()
 		fi
 
 		echo -n " - synack"
-		count=`ip netns exec $ns2 nstat -as | grep MPTcpExtMPJoinPortSynAckRx |
-			awk '{print $2}'`
+		count=$(ip netns exec $ns2 nstat -as | grep MPTcpExtMPJoinPortSynAckRx |
+			awk '{print $2}')
 		[ -z "$count" ] && count=0
 		if [ "$count" != "$syn_ack_nr" ]; then
 			echo "[fail] got $count JOIN[s] synack with a different \
@@ -1367,8 +1367,8 @@ chk_add_nr()
 		fi
 
 		echo -n " - ack"
-		count=`ip netns exec $ns1 nstat -as | grep MPTcpExtMPJoinPortAckRx |
-			awk '{print $2}'`
+		count=$(ip netns exec $ns1 nstat -as | grep MPTcpExtMPJoinPortAckRx |
+			awk '{print $2}')
 		[ -z "$count" ] && count=0
 		if [ "$count" != "$ack_nr" ]; then
 			echo "[fail] got $count JOIN[s] ack with a different \
@@ -1380,8 +1380,8 @@ chk_add_nr()
 		fi
 
 		printf "%-${nr_blank}s %s" " " "syn"
-		count=`ip netns exec $ns1 nstat -as | grep MPTcpExtMismatchPortSynRx |
-			awk '{print $2}'`
+		count=$(ip netns exec $ns1 nstat -as | grep MPTcpExtMismatchPortSynRx |
+			awk '{print $2}')
 		[ -z "$count" ] && count=0
 		if [ "$count" != "$mis_syn_nr" ]; then
 			echo "[fail] got $count JOIN[s] syn with a mismatched \
@@ -1393,8 +1393,8 @@ chk_add_nr()
 		fi
 
 		echo -n " - ack   "
-		count=`ip netns exec $ns1 nstat -as | grep MPTcpExtMismatchPortAckRx |
-			awk '{print $2}'`
+		count=$(ip netns exec $ns1 nstat -as | grep MPTcpExtMismatchPortAckRx |
+			awk '{print $2}')
 		[ -z "$count" ] && count=0
 		if [ "$count" != "$mis_ack_nr" ]; then
 			echo "[fail] got $count JOIN[s] ack with a mismatched \
@@ -1440,7 +1440,7 @@ chk_rm_nr()
 	fi
 
 	printf "%-${nr_blank}s %s" " " "rm "
-	count=`ip netns exec $addr_ns nstat -as | grep MPTcpExtRmAddr | awk '{print $2}'`
+	count=$(ip netns exec $addr_ns nstat -as | grep MPTcpExtRmAddr | awk '{print $2}')
 	[ -z "$count" ] && count=0
 	if [ "$count" != "$rm_addr_nr" ]; then
 		echo "[fail] got $count RM_ADDR[s] expected $rm_addr_nr"
@@ -1451,7 +1451,7 @@ chk_rm_nr()
 	fi
 
 	echo -n " - rmsf  "
-	count=`ip netns exec $subflow_ns nstat -as | grep MPTcpExtRmSubflow | awk '{print $2}'`
+	count=$(ip netns exec $subflow_ns nstat -as | grep MPTcpExtRmSubflow | awk '{print $2}')
 	[ -z "$count" ] && count=0
 	if [ -n "$simult" ]; then
 		local cnt=$(ip netns exec $addr_ns nstat -as | grep MPTcpExtRmSubflow | awk '{print $2}')
@@ -1493,7 +1493,7 @@ chk_prio_nr()
 	local dump_stats
 
 	printf "%-${nr_blank}s %s" " " "ptx"
-	count=`ip netns exec $ns1 nstat -as | grep MPTcpExtMPPrioTx | awk '{print $2}'`
+	count=$(ip netns exec $ns1 nstat -as | grep MPTcpExtMPPrioTx | awk '{print $2}')
 	[ -z "$count" ] && count=0
 	if [ "$count" != "$mp_prio_nr_tx" ]; then
 		echo "[fail] got $count MP_PRIO[s] TX expected $mp_prio_nr_tx"
@@ -1504,7 +1504,7 @@ chk_prio_nr()
 	fi
 
 	echo -n " - prx   "
-	count=`ip netns exec $ns1 nstat -as | grep MPTcpExtMPPrioRx | awk '{print $2}'`
+	count=$(ip netns exec $ns1 nstat -as | grep MPTcpExtMPPrioRx | awk '{print $2}')
 	[ -z "$count" ] && count=0
 	if [ "$count" != "$mp_prio_nr_rx" ]; then
 		echo "[fail] got $count MP_PRIO[s] RX expected $mp_prio_nr_rx"
@@ -1523,8 +1523,10 @@ chk_link_usage()
 	local link=$2
 	local out=$3
 	local expected_rate=$4
-	local tx_link=`ip netns exec $ns cat /sys/class/net/$link/statistics/tx_bytes`
-	local tx_total=`ls -l $out | awk '{print $5}'`
+
+	local tx_link tx_total
+	tx_link=$(ip netns exec $ns cat /sys/class/net/$link/statistics/tx_bytes)
+	tx_total=$(ls -l $out | awk '{print $5}')
 	local tx_rate=$((tx_link * 100 / $tx_total))
 	local tolerance=5
 
-- 
2.34.1

[PATCH mptcp-next v3 11/12] selftests: mptcp: join: make it shellcheck compliant

[Matthieu Baerts]

This fixes a few issues reported by ShellCheck:

- SC2068: Double quote array expansions to avoid re-splitting elements.
- SC2206: Quote to prevent word splitting/globbing, or split robustly
          with mapfile or read -a.
- SC2166: Prefer [ p ] && [ q ] as [ p -a q ] is not well defined.
- SC2155: Declare and assign separately to avoid masking return values.
- SC2162: read without -r will mangle backslashes.
- SC2219: Instead of 'let expr', prefer (( expr )) .
- SC2181: Check exit code directly with e.g. 'if mycmd;', not indirectly
          with $?.
- SC2236: Use -n instead of ! -z.
- SC2004: $/${} is unnecessary on arithmetic variables.
- SC2012: Use find instead of ls to better handle non-alphanumeric
          filenames.
- SC2002: Useless cat. Consider 'cmd < file | ..' or 'cmd file | ..'
          instead.

SC2086 (Double quotes to prevent globbing and word splitting) is ignored
because it is controlled for the moment and there are too many to
change.

While at it, also fixed the alignment in one comment.

Reviewed-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
---
 .../testing/selftests/net/mptcp/mptcp_join.sh | 126 +++++++++---------
 1 file changed, 66 insertions(+), 60 deletions(-)

diff --git a/tools/testing/selftests/net/mptcp/mptcp_join.sh b/tools/testing/selftests/net/mptcp/mptcp_join.sh
index f61c3804f5e0..20ec31b05990 100755
--- a/tools/testing/selftests/net/mptcp/mptcp_join.sh
+++ b/tools/testing/selftests/net/mptcp/mptcp_join.sh
@@ -1,6 +1,11 @@
 #!/bin/bash
 # SPDX-License-Identifier: GPL-2.0
 
+# Double quotes to prevent globbing and word splitting is recommended in new
+# code but we accept it, especially because there were too many before having
+# address all other issues detected by shellcheck.
+#shellcheck disable=SC2086
+
 ret=0
 sin=""
 sinfail=""
@@ -77,7 +82,7 @@ init_partial()
 	validate_checksum=$checksum
 	FAILING_LINKS=""
 
-	#  ns1              ns2
+	#  ns1         ns2
 	# ns1eth1    ns2eth1
 	# ns1eth2    ns2eth2
 	# ns1eth3    ns2eth3
@@ -339,12 +344,11 @@ check_transfer()
 	local in=$1
 	local out=$2
 	local what=$3
+	local i a b
 
 	local line
-	cmp -l "$in" "$out" | while read line; do
-		local arr=($line)
-
-		let sum=0${arr[1]}+0${arr[2]}
+	cmp -l "$in" "$out" | while read -r i a b; do
+		local sum=$((0${a} + 0${b}))
 		if [ $check_invert -eq 0 ] || [ $sum -ne $((0xff)) ]; then
 			echo "[ FAIL ] $what does not match (in, out):"
 			print_file_err "$in"
@@ -353,7 +357,7 @@ check_transfer()
 
 			return 1
 		else
-			echo "$what has inverted byte at ${arr[0]}"
+			echo "$what has inverted byte at ${i}"
 		fi
 	done
 
@@ -366,8 +370,7 @@ do_ping()
 	local connector_ns="$2"
 	local connect_addr="$3"
 
-	ip netns exec ${connector_ns} ping -q -c 1 $connect_addr >/dev/null
-	if [ $? -ne 0 ] ; then
+	if ! ip netns exec ${connector_ns} ping -q -c 1 $connect_addr >/dev/null; then
 		echo "$listener_ns -> $connect_addr connectivity [ FAIL ]" 1>&2
 		fail_test
 	fi
@@ -474,26 +477,26 @@ pm_nl_add_endpoint()
 	local nr=2
 
 	local p
-	for p in $@
+	for p in "${@}"
 	do
 		if [ $p = "flags" ]; then
 			eval _flags=\$"$nr"
-			[ ! -z $_flags ]; flags="flags $_flags"
+			[ -n "$_flags" ]; flags="flags $_flags"
 		fi
 		if [ $p = "dev" ]; then
 			eval _dev=\$"$nr"
-			[ ! -z $_dev ]; dev="dev $_dev"
+			[ -n "$_dev" ]; dev="dev $_dev"
 		fi
 		if [ $p = "id" ]; then
 			eval _id=\$"$nr"
-			[ ! -z $_id ]; id="id $_id"
+			[ -n "$_id" ]; id="id $_id"
 		fi
 		if [ $p = "port" ]; then
 			eval _port=\$"$nr"
-			[ ! -z $_port ]; port="port $_port"
+			[ -n "$_port" ]; port="port $_port"
 		fi
 
-		let nr+=1
+		nr=$((nr + 1))
 	done
 
 	if [ $ip_mptcp -eq 1 ]; then
@@ -572,18 +575,18 @@ pm_nl_check_endpoint()
 	while [ -n "$1" ]; do
 		if [ $1 = "flags" ]; then
 			_flags=$2
-			[ ! -z $_flags ]; flags="flags $_flags"
+			[ -n "$_flags" ]; flags="flags $_flags"
 			shift
 		elif [ $1 = "dev" ]; then
-			[ ! -z $2 ]; dev="dev $1"
+			[ -n "$2" ]; dev="dev $1"
 			shift
 		elif [ $1 = "id" ]; then
 			_id=$2
-			[ ! -z $_id ]; id="id $_id"
+			[ -n "$_id" ]; id="id $_id"
 			shift
 		elif [ $1 = "port" ]; then
 			_port=$2
-			[ ! -z $_port ]; port=" port $_port"
+			[ -n "$_port" ]; port=" port $_port"
 			shift
 		fi
 
@@ -713,7 +716,7 @@ do_transfer()
 					./mptcp_connect -t ${timeout_poll} -p $port -s ${cl_proto} \
 						$extra_args $connect_addr > "$cout" &
 	else
-		cat "$cinfail" | tee "$cinsent" | \
+		tee "$cinsent"< "$cinfail" | \
 			timeout ${timeout_test} \
 				ip netns exec ${connector_ns} \
 					./mptcp_connect -t ${timeout_poll} -p $port -s ${cl_proto} \
@@ -723,12 +726,13 @@ do_transfer()
 
 	# let the mptcp subflow be established in background before
 	# do endpoint manipulation
-	[ $addr_nr_ns1 = "0" -a $addr_nr_ns2 = "0" ] || sleep 1
+	if [ $addr_nr_ns1 != "0" ] || [ $addr_nr_ns2 != "0" ]; then
+		sleep 1
+	fi
 
 	if [ $addr_nr_ns1 -gt 0 ]; then
 		local counter=2
-		local add_nr_ns1
-		let add_nr_ns1=addr_nr_ns1
+		local add_nr_ns1=${addr_nr_ns1}
 		while [ $add_nr_ns1 -gt 0 ]; do
 			local addr
 			if is_v6 "${connect_addr}"; then
@@ -737,21 +741,21 @@ do_transfer()
 				addr="10.0.$counter.1"
 			fi
 			pm_nl_add_endpoint $ns1 $addr flags signal
-			let counter+=1
-			let add_nr_ns1-=1
+			counter=$((counter + 1))
+			add_nr_ns1=$((add_nr_ns1 - 1))
 		done
 	elif [ $addr_nr_ns1 -lt 0 ]; then
-		local rm_nr_ns1
-		let rm_nr_ns1=-addr_nr_ns1
+		local rm_nr_ns1=$((-addr_nr_ns1))
 		if [ $rm_nr_ns1 -lt 8 ]; then
 			local counter=0
 			local line
-			pm_nl_show_endpoints ${listener_ns} | while read line; do
+			pm_nl_show_endpoints ${listener_ns} | while read -r line; do
+				# shellcheck disable=SC2206 # we do want to split per word
 				local arr=($line)
 				local nr=0
 
 				local i
-				for i in ${arr[@]}; do
+				for i in "${arr[@]}"; do
 					if [ $i = "id" ]; then
 						if [ $counter -eq $rm_nr_ns1 ]; then
 							break
@@ -760,9 +764,9 @@ do_transfer()
 						rm_addr=$(rm_addr_count ${connector_ns})
 						pm_nl_del_endpoint ${listener_ns} $id
 						wait_rm_addr ${connector_ns} ${rm_addr}
-						let counter+=1
+						counter=$((counter + 1))
 					fi
-					let nr+=1
+					nr=$((nr + 1))
 				done
 			done
 		elif [ $rm_nr_ns1 -eq 8 ]; then
@@ -780,11 +784,10 @@ do_transfer()
 
 	# if newly added endpoints must be deleted, give the background msk
 	# some time to created them
-	[ $addr_nr_ns1 -gt 0 -a $addr_nr_ns2 -lt 0 ] && sleep 1
+	[ $addr_nr_ns1 -gt 0 ] && [ $addr_nr_ns2 -lt 0 ] && sleep 1
 
 	if [ $addr_nr_ns2 -gt 0 ]; then
-		local add_nr_ns2
-		let add_nr_ns2=addr_nr_ns2
+		local add_nr_ns2=${addr_nr_ns2}
 		local counter=3
 		while [ $add_nr_ns2 -gt 0 ]; do
 			local addr
@@ -794,20 +797,21 @@ do_transfer()
 				addr="10.0.$counter.2"
 			fi
 			pm_nl_add_endpoint $ns2 $addr flags $flags
-			let counter+=1
-			let add_nr_ns2-=1
+			counter=$((counter + 1))
+			add_nr_ns2=$((add_nr_ns2 - 1))
 		done
 	elif [ $addr_nr_ns2 -lt 0 ]; then
-		local rm_nr_ns2
+		local rm_nr_ns2=$((-addr_nr_ns2))
 		if [ $rm_nr_ns2 -lt 8 ]; then
 			local counter=0
 			local line
-			pm_nl_show_endpoints ${connector_ns} | while read line; do
+			pm_nl_show_endpoints ${connector_ns} | while read -r line; do
+				# shellcheck disable=SC2206 # we do want to split per word
 				local arr=($line)
 				local nr=0
 
 				local i
-				for i in ${arr[@]}; do
+				for i in "${arr[@]}"; do
 					if [ $i = "id" ]; then
 						if [ $counter -eq $rm_nr_ns2 ]; then
 							break
@@ -819,9 +823,9 @@ do_transfer()
 						rm_addr=$(rm_addr_count ${listener_ns})
 						pm_nl_del_endpoint ${connector_ns} $id
 						wait_rm_addr ${listener_ns} ${rm_addr}
-						let counter+=1
+						counter=$((counter + 1))
 					fi
-					let nr+=1
+					nr=$((nr + 1))
 				done
 			done
 		elif [ $rm_nr_ns2 -eq 8 ]; then
@@ -837,23 +841,24 @@ do_transfer()
 		fi
 	fi
 
-	if [ ! -z $sflags ]; then
+	if [ -n "${sflags}" ]; then
 		sleep 1
 
 		local netns
 		for netns in "$ns1" "$ns2"; do
 			local line
-			pm_nl_show_endpoints $netns | while read line; do
+			pm_nl_show_endpoints $netns | while read -r line; do
+				# shellcheck disable=SC2206 # we do want to split per word
 				local arr=($line)
 				local nr=0
 				local id
 
 				local i
-				for i in ${arr[@]}; do
+				for i in "${arr[@]}"; do
 					if [ $i = "id" ]; then
 						id=${arr[$nr+1]}
 					fi
-					let nr+=1
+					nr=$((nr + 1))
 				done
 				pm_nl_change_endpoint $netns $id $sflags
 			done
@@ -947,14 +952,14 @@ run_tests()
 		make_file "$cinfail" "client" $size
 	# create the input file for the failure test when
 	# the first failure test run
-	elif [ "$test_linkfail" -ne 0 -a -z "$cinfail" ]; then
+	elif [ "$test_linkfail" -ne 0 ] && [ -z "$cinfail" ]; then
 		# the client file must be considerably larger
 		# of the maximum expected cwin value, or the
 		# link utilization will be not predicable
 		size=$((RANDOM%2))
 		size=$((size+1))
 		size=$((size*8192))
-		size=$((size + ( $RANDOM % 8192) ))
+		size=$((size + ( RANDOM % 8192) ))
 
 		cinfail=$(mktemp)
 		make_file "$cinfail" "client" $size
@@ -967,7 +972,7 @@ run_tests()
 			sinfail=$(mktemp)
 		fi
 		make_file "$sinfail" "server" $size
-	elif [ "$test_linkfail" -eq 2 -a -z "$sinfail" ]; then
+	elif [ "$test_linkfail" -eq 2 ] && [ -z "$sinfail" ]; then
 		size=$((RANDOM%16))
 		size=$((size+1))
 		size=$((size*2048))
@@ -1016,8 +1021,8 @@ chk_csum_nr()
 	printf " %-36s %s" "$msg" "sum"
 	count=$(ip netns exec $ns1 nstat -as | grep MPTcpExtDataCsumErr | awk '{print $2}')
 	[ -z "$count" ] && count=0
-	if [ "$count" != $csum_ns1 -a $allow_multi_errors_ns1 -eq 0 ] ||
-	   [ "$count" -lt $csum_ns1 -a $allow_multi_errors_ns1 -eq 1 ]; then
+	if { [ "$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 $csum_ns1"
 		fail_test
 		dump_stats=1
@@ -1027,8 +1032,8 @@ chk_csum_nr()
 	echo -n " - csum  "
 	count=$(ip netns exec $ns2 nstat -as | grep MPTcpExtDataCsumErr | awk '{print $2}')
 	[ -z "$count" ] && count=0
-	if [ "$count" != $csum_ns2 -a $allow_multi_errors_ns2 -eq 0 ] ||
-	   [ "$count" -lt $csum_ns2 -a $allow_multi_errors_ns2 -eq 1 ]; then
+	if { [ "$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 $csum_ns2"
 		fail_test
 		dump_stats=1
@@ -1269,8 +1274,8 @@ chk_stale_nr()
 	[ -z "$recover_nr" ] && recover_nr=0
 
 	if [ $stale_nr -lt $stale_min ] ||
-	   [ $stale_max -gt 0 -a $stale_nr -gt $stale_max ] ||
-	   [ $((stale_nr - $recover_nr)) -ne $stale_delta ]; then
+	   { [ $stale_max -gt 0 ] && [ $stale_nr -gt $stale_max ]; } ||
+	   [ $((stale_nr - recover_nr)) -ne $stale_delta ]; then
 		echo "[fail] got $stale_nr stale[s] $recover_nr recover[s], " \
 		     " expected stale in range [$stale_min..$stale_max]," \
 		     " stale-recover delta $stale_delta "
@@ -1309,7 +1314,7 @@ chk_add_nr()
 
 	# if the test configured a short timeout tolerate greater then expected
 	# add addrs options, due to retransmissions
-	if [ "$count" != "$add_nr" ] && [ "$timeout" -gt 1 -o "$count" -lt "$add_nr" ]; then
+	if [ "$count" != "$add_nr" ] && { [ "$timeout" -gt 1 ] || [ "$count" -lt "$add_nr" ]; }; then
 		echo "[fail] got $count ADD_ADDR[s] expected $add_nr"
 		fail_test
 		dump_stats=1
@@ -1454,8 +1459,9 @@ chk_rm_nr()
 	count=$(ip netns exec $subflow_ns nstat -as | grep MPTcpExtRmSubflow | awk '{print $2}')
 	[ -z "$count" ] && count=0
 	if [ -n "$simult" ]; then
-		local cnt=$(ip netns exec $addr_ns nstat -as | grep MPTcpExtRmSubflow | awk '{print $2}')
-		local suffix
+		local cnt suffix
+
+		cnt=$(ip netns exec $addr_ns nstat -as | grep MPTcpExtRmSubflow | awk '{print $2}')
 
 		# in case of simult flush, the subflow removal count on each side is
 		# unreliable
@@ -1526,13 +1532,13 @@ chk_link_usage()
 
 	local tx_link tx_total
 	tx_link=$(ip netns exec $ns cat /sys/class/net/$link/statistics/tx_bytes)
-	tx_total=$(ls -l $out | awk '{print $5}')
-	local tx_rate=$((tx_link * 100 / $tx_total))
+	tx_total=$(stat --format=%s $out)
+	local tx_rate=$((tx_link * 100 / tx_total))
 	local tolerance=5
 
 	printf "%-${nr_blank}s %-18s" " " "link usage"
-	if [ $tx_rate -lt $((expected_rate - $tolerance)) -o \
-	     $tx_rate -gt $((expected_rate + $tolerance)) ]; then
+	if [ $tx_rate -lt $((expected_rate - tolerance)) ] || \
+	   [ $tx_rate -gt $((expected_rate + tolerance)) ]; then
 		echo "[fail] got $tx_rate% usage, expected $expected_rate%"
 		fail_test
 	else
-- 
2.34.1

Re: [PATCH mptcp-next v3 11/12] selftests: mptcp: join: make it shellcheck compliant

[Geliang Tang]

Hi Matt,

Matthieu Baerts <matthieu.baerts@tessares.net> 于2022年2月24日周四 21:57写道：
>
> This fixes a few issues reported by ShellCheck:
>
> - SC2068: Double quote array expansions to avoid re-splitting elements.
> - SC2206: Quote to prevent word splitting/globbing, or split robustly
>           with mapfile or read -a.
> - SC2166: Prefer [ p ] && [ q ] as [ p -a q ] is not well defined.
> - SC2155: Declare and assign separately to avoid masking return values.
> - SC2162: read without -r will mangle backslashes.
> - SC2219: Instead of 'let expr', prefer (( expr )) .
> - SC2181: Check exit code directly with e.g. 'if mycmd;', not indirectly
>           with $?.
> - SC2236: Use -n instead of ! -z.
> - SC2004: $/${} is unnecessary on arithmetic variables.
> - SC2012: Use find instead of ls to better handle non-alphanumeric
>           filenames.
> - SC2002: Useless cat. Consider 'cmd < file | ..' or 'cmd file | ..'
>           instead.
>
> SC2086 (Double quotes to prevent globbing and word splitting) is ignored
> because it is controlled for the moment and there are too many to
> change.
>
> While at it, also fixed the alignment in one comment.
>
> Reviewed-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
> Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
> ---
>  .../testing/selftests/net/mptcp/mptcp_join.sh | 126 +++++++++---------
>  1 file changed, 66 insertions(+), 60 deletions(-)
>
> diff --git a/tools/testing/selftests/net/mptcp/mptcp_join.sh b/tools/testing/selftests/net/mptcp/mptcp_join.sh
> index f61c3804f5e0..20ec31b05990 100755
> --- a/tools/testing/selftests/net/mptcp/mptcp_join.sh
> +++ b/tools/testing/selftests/net/mptcp/mptcp_join.sh
> @@ -1,6 +1,11 @@
>  #!/bin/bash
>  # SPDX-License-Identifier: GPL-2.0
>
> +# Double quotes to prevent globbing and word splitting is recommended in new
> +# code but we accept it, especially because there were too many before having
> +# address all other issues detected by shellcheck.
> +#shellcheck disable=SC2086
> +
>  ret=0
>  sin=""
>  sinfail=""
> @@ -77,7 +82,7 @@ init_partial()
>         validate_checksum=$checksum
>         FAILING_LINKS=""
>
> -       #  ns1              ns2
> +       #  ns1         ns2
>         # ns1eth1    ns2eth1
>         # ns1eth2    ns2eth2
>         # ns1eth3    ns2eth3
> @@ -339,12 +344,11 @@ check_transfer()
>         local in=$1
>         local out=$2
>         local what=$3
> +       local i a b
>
>         local line
> -       cmp -l "$in" "$out" | while read line; do
> -               local arr=($line)
> -
> -               let sum=0${arr[1]}+0${arr[2]}
> +       cmp -l "$in" "$out" | while read -r i a b; do
> +               local sum=$((0${a} + 0${b}))
>                 if [ $check_invert -eq 0 ] || [ $sum -ne $((0xff)) ]; then
>                         echo "[ FAIL ] $what does not match (in, out):"
>                         print_file_err "$in"
> @@ -353,7 +357,7 @@ check_transfer()
>
>                         return 1
>                 else
> -                       echo "$what has inverted byte at ${arr[0]}"
> +                       echo "$what has inverted byte at ${i}"
>                 fi
>         done
>
> @@ -366,8 +370,7 @@ do_ping()
>         local connector_ns="$2"
>         local connect_addr="$3"
>
> -       ip netns exec ${connector_ns} ping -q -c 1 $connect_addr >/dev/null
> -       if [ $? -ne 0 ] ; then
> +       if ! ip netns exec ${connector_ns} ping -q -c 1 $connect_addr >/dev/null; then
>                 echo "$listener_ns -> $connect_addr connectivity [ FAIL ]" 1>&2
>                 fail_test
>         fi
> @@ -474,26 +477,26 @@ pm_nl_add_endpoint()
>         local nr=2
>
>         local p
> -       for p in $@
> +       for p in "${@}"
>         do
>                 if [ $p = "flags" ]; then
>                         eval _flags=\$"$nr"
> -                       [ ! -z $_flags ]; flags="flags $_flags"
> +                       [ -n "$_flags" ]; flags="flags $_flags"
>                 fi
>                 if [ $p = "dev" ]; then
>                         eval _dev=\$"$nr"
> -                       [ ! -z $_dev ]; dev="dev $_dev"
> +                       [ -n "$_dev" ]; dev="dev $_dev"
>                 fi
>                 if [ $p = "id" ]; then
>                         eval _id=\$"$nr"
> -                       [ ! -z $_id ]; id="id $_id"
> +                       [ -n "$_id" ]; id="id $_id"
>                 fi
>                 if [ $p = "port" ]; then
>                         eval _port=\$"$nr"
> -                       [ ! -z $_port ]; port="port $_port"
> +                       [ -n "$_port" ]; port="port $_port"
>                 fi
>
> -               let nr+=1
> +               nr=$((nr + 1))
>         done
>
>         if [ $ip_mptcp -eq 1 ]; then
> @@ -572,18 +575,18 @@ pm_nl_check_endpoint()
>         while [ -n "$1" ]; do
>                 if [ $1 = "flags" ]; then
>                         _flags=$2
> -                       [ ! -z $_flags ]; flags="flags $_flags"
> +                       [ -n "$_flags" ]; flags="flags $_flags"
>                         shift
>                 elif [ $1 = "dev" ]; then
> -                       [ ! -z $2 ]; dev="dev $1"
> +                       [ -n "$2" ]; dev="dev $1"
>                         shift
>                 elif [ $1 = "id" ]; then
>                         _id=$2
> -                       [ ! -z $_id ]; id="id $_id"
> +                       [ -n "$_id" ]; id="id $_id"
>                         shift
>                 elif [ $1 = "port" ]; then
>                         _port=$2
> -                       [ ! -z $_port ]; port=" port $_port"
> +                       [ -n "$_port" ]; port=" port $_port"
>                         shift
>                 fi
>
> @@ -713,7 +716,7 @@ do_transfer()
>                                         ./mptcp_connect -t ${timeout_poll} -p $port -s ${cl_proto} \
>                                                 $extra_args $connect_addr > "$cout" &
>         else
> -               cat "$cinfail" | tee "$cinsent" | \
> +               tee "$cinsent"< "$cinfail" | \

Here a space is missing before '<'.

>                         timeout ${timeout_test} \
>                                 ip netns exec ${connector_ns} \
>                                         ./mptcp_connect -t ${timeout_poll} -p $port -s ${cl_proto} \
> @@ -723,12 +726,13 @@ do_transfer()
>
>         # let the mptcp subflow be established in background before
>         # do endpoint manipulation
> -       [ $addr_nr_ns1 = "0" -a $addr_nr_ns2 = "0" ] || sleep 1
> +       if [ $addr_nr_ns1 != "0" ] || [ $addr_nr_ns2 != "0" ]; then
> +               sleep 1
> +       fi
>
>         if [ $addr_nr_ns1 -gt 0 ]; then
>                 local counter=2
> -               local add_nr_ns1
> -               let add_nr_ns1=addr_nr_ns1
> +               local add_nr_ns1=${addr_nr_ns1}
>                 while [ $add_nr_ns1 -gt 0 ]; do
>                         local addr
>                         if is_v6 "${connect_addr}"; then
> @@ -737,21 +741,21 @@ do_transfer()
>                                 addr="10.0.$counter.1"
>                         fi
>                         pm_nl_add_endpoint $ns1 $addr flags signal
> -                       let counter+=1
> -                       let add_nr_ns1-=1
> +                       counter=$((counter + 1))
> +                       add_nr_ns1=$((add_nr_ns1 - 1))
>                 done
>         elif [ $addr_nr_ns1 -lt 0 ]; then
> -               local rm_nr_ns1
> -               let rm_nr_ns1=-addr_nr_ns1
> +               local rm_nr_ns1=$((-addr_nr_ns1))
>                 if [ $rm_nr_ns1 -lt 8 ]; then
>                         local counter=0
>                         local line
> -                       pm_nl_show_endpoints ${listener_ns} | while read line; do
> +                       pm_nl_show_endpoints ${listener_ns} | while read -r line; do
> +                               # shellcheck disable=SC2206 # we do want to split per word
>                                 local arr=($line)
>                                 local nr=0
>
>                                 local i
> -                               for i in ${arr[@]}; do
> +                               for i in "${arr[@]}"; do
>                                         if [ $i = "id" ]; then
>                                                 if [ $counter -eq $rm_nr_ns1 ]; then
>                                                         break
> @@ -760,9 +764,9 @@ do_transfer()
>                                                 rm_addr=$(rm_addr_count ${connector_ns})
>                                                 pm_nl_del_endpoint ${listener_ns} $id
>                                                 wait_rm_addr ${connector_ns} ${rm_addr}
> -                                               let counter+=1
> +                                               counter=$((counter + 1))
>                                         fi
> -                                       let nr+=1
> +                                       nr=$((nr + 1))
>                                 done
>                         done
>                 elif [ $rm_nr_ns1 -eq 8 ]; then
> @@ -780,11 +784,10 @@ do_transfer()
>
>         # if newly added endpoints must be deleted, give the background msk
>         # some time to created them
> -       [ $addr_nr_ns1 -gt 0 -a $addr_nr_ns2 -lt 0 ] && sleep 1
> +       [ $addr_nr_ns1 -gt 0 ] && [ $addr_nr_ns2 -lt 0 ] && sleep 1
>
>         if [ $addr_nr_ns2 -gt 0 ]; then
> -               local add_nr_ns2
> -               let add_nr_ns2=addr_nr_ns2
> +               local add_nr_ns2=${addr_nr_ns2}
>                 local counter=3
>                 while [ $add_nr_ns2 -gt 0 ]; do
>                         local addr
> @@ -794,20 +797,21 @@ do_transfer()
>                                 addr="10.0.$counter.2"
>                         fi
>                         pm_nl_add_endpoint $ns2 $addr flags $flags
> -                       let counter+=1
> -                       let add_nr_ns2-=1
> +                       counter=$((counter + 1))
> +                       add_nr_ns2=$((add_nr_ns2 - 1))
>                 done
>         elif [ $addr_nr_ns2 -lt 0 ]; then
> -               local rm_nr_ns2
> +               local rm_nr_ns2=$((-addr_nr_ns2))
>                 if [ $rm_nr_ns2 -lt 8 ]; then
>                         local counter=0
>                         local line
> -                       pm_nl_show_endpoints ${connector_ns} | while read line; do
> +                       pm_nl_show_endpoints ${connector_ns} | while read -r line; do
> +                               # shellcheck disable=SC2206 # we do want to split per word
>                                 local arr=($line)
>                                 local nr=0
>
>                                 local i
> -                               for i in ${arr[@]}; do
> +                               for i in "${arr[@]}"; do
>                                         if [ $i = "id" ]; then
>                                                 if [ $counter -eq $rm_nr_ns2 ]; then
>                                                         break
> @@ -819,9 +823,9 @@ do_transfer()
>                                                 rm_addr=$(rm_addr_count ${listener_ns})
>                                                 pm_nl_del_endpoint ${connector_ns} $id
>                                                 wait_rm_addr ${listener_ns} ${rm_addr}
> -                                               let counter+=1
> +                                               counter=$((counter + 1))
>                                         fi
> -                                       let nr+=1
> +                                       nr=$((nr + 1))
>                                 done
>                         done
>                 elif [ $rm_nr_ns2 -eq 8 ]; then
> @@ -837,23 +841,24 @@ do_transfer()
>                 fi
>         fi
>
> -       if [ ! -z $sflags ]; then
> +       if [ -n "${sflags}" ]; then
>                 sleep 1
>
>                 local netns
>                 for netns in "$ns1" "$ns2"; do
>                         local line
> -                       pm_nl_show_endpoints $netns | while read line; do
> +                       pm_nl_show_endpoints $netns | while read -r line; do
> +                               # shellcheck disable=SC2206 # we do want to split per word
>                                 local arr=($line)
>                                 local nr=0
>                                 local id
>
>                                 local i
> -                               for i in ${arr[@]}; do
> +                               for i in "${arr[@]}"; do
>                                         if [ $i = "id" ]; then
>                                                 id=${arr[$nr+1]}
>                                         fi
> -                                       let nr+=1
> +                                       nr=$((nr + 1))
>                                 done
>                                 pm_nl_change_endpoint $netns $id $sflags
>                         done
> @@ -947,14 +952,14 @@ run_tests()
>                 make_file "$cinfail" "client" $size
>         # create the input file for the failure test when
>         # the first failure test run
> -       elif [ "$test_linkfail" -ne 0 -a -z "$cinfail" ]; then
> +       elif [ "$test_linkfail" -ne 0 ] && [ -z "$cinfail" ]; then
>                 # the client file must be considerably larger
>                 # of the maximum expected cwin value, or the
>                 # link utilization will be not predicable
>                 size=$((RANDOM%2))
>                 size=$((size+1))
>                 size=$((size*8192))
> -               size=$((size + ( $RANDOM % 8192) ))
> +               size=$((size + ( RANDOM % 8192) ))
>
>                 cinfail=$(mktemp)
>                 make_file "$cinfail" "client" $size
> @@ -967,7 +972,7 @@ run_tests()
>                         sinfail=$(mktemp)
>                 fi
>                 make_file "$sinfail" "server" $size
> -       elif [ "$test_linkfail" -eq 2 -a -z "$sinfail" ]; then
> +       elif [ "$test_linkfail" -eq 2 ] && [ -z "$sinfail" ]; then
>                 size=$((RANDOM%16))
>                 size=$((size+1))
>                 size=$((size*2048))
> @@ -1016,8 +1021,8 @@ chk_csum_nr()
>         printf " %-36s %s" "$msg" "sum"
>         count=$(ip netns exec $ns1 nstat -as | grep MPTcpExtDataCsumErr | awk '{print $2}')
>         [ -z "$count" ] && count=0
> -       if [ "$count" != $csum_ns1 -a $allow_multi_errors_ns1 -eq 0 ] ||
> -          [ "$count" -lt $csum_ns1 -a $allow_multi_errors_ns1 -eq 1 ]; then
> +       if { [ "$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 $csum_ns1"
>                 fail_test
>                 dump_stats=1
> @@ -1027,8 +1032,8 @@ chk_csum_nr()
>         echo -n " - csum  "
>         count=$(ip netns exec $ns2 nstat -as | grep MPTcpExtDataCsumErr | awk '{print $2}')
>         [ -z "$count" ] && count=0
> -       if [ "$count" != $csum_ns2 -a $allow_multi_errors_ns2 -eq 0 ] ||
> -          [ "$count" -lt $csum_ns2 -a $allow_multi_errors_ns2 -eq 1 ]; then
> +       if { [ "$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 $csum_ns2"
>                 fail_test
>                 dump_stats=1
> @@ -1269,8 +1274,8 @@ chk_stale_nr()
>         [ -z "$recover_nr" ] && recover_nr=0
>
>         if [ $stale_nr -lt $stale_min ] ||
> -          [ $stale_max -gt 0 -a $stale_nr -gt $stale_max ] ||
> -          [ $((stale_nr - $recover_nr)) -ne $stale_delta ]; then
> +          { [ $stale_max -gt 0 ] && [ $stale_nr -gt $stale_max ]; } ||
> +          [ $((stale_nr - recover_nr)) -ne $stale_delta ]; then
>                 echo "[fail] got $stale_nr stale[s] $recover_nr recover[s], " \
>                      " expected stale in range [$stale_min..$stale_max]," \
>                      " stale-recover delta $stale_delta "
> @@ -1309,7 +1314,7 @@ chk_add_nr()
>
>         # if the test configured a short timeout tolerate greater then expected
>         # add addrs options, due to retransmissions
> -       if [ "$count" != "$add_nr" ] && [ "$timeout" -gt 1 -o "$count" -lt "$add_nr" ]; then
> +       if [ "$count" != "$add_nr" ] && { [ "$timeout" -gt 1 ] || [ "$count" -lt "$add_nr" ]; }; then
>                 echo "[fail] got $count ADD_ADDR[s] expected $add_nr"
>                 fail_test
>                 dump_stats=1
> @@ -1454,8 +1459,9 @@ chk_rm_nr()
>         count=$(ip netns exec $subflow_ns nstat -as | grep MPTcpExtRmSubflow | awk '{print $2}')
>         [ -z "$count" ] && count=0
>         if [ -n "$simult" ]; then
> -               local cnt=$(ip netns exec $addr_ns nstat -as | grep MPTcpExtRmSubflow | awk '{print $2}')
> -               local suffix
> +               local cnt suffix
> +
> +               cnt=$(ip netns exec $addr_ns nstat -as | grep MPTcpExtRmSubflow | awk '{print $2}')
>
>                 # in case of simult flush, the subflow removal count on each side is
>                 # unreliable
> @@ -1526,13 +1532,13 @@ chk_link_usage()
>
>         local tx_link tx_total
>         tx_link=$(ip netns exec $ns cat /sys/class/net/$link/statistics/tx_bytes)
> -       tx_total=$(ls -l $out | awk '{print $5}')
> -       local tx_rate=$((tx_link * 100 / $tx_total))
> +       tx_total=$(stat --format=%s $out)
> +       local tx_rate=$((tx_link * 100 / tx_total))
>         local tolerance=5
>
>         printf "%-${nr_blank}s %-18s" " " "link usage"
> -       if [ $tx_rate -lt $((expected_rate - $tolerance)) -o \
> -            $tx_rate -gt $((expected_rate + $tolerance)) ]; then
> +       if [ $tx_rate -lt $((expected_rate - tolerance)) ] || \
> +          [ $tx_rate -gt $((expected_rate + tolerance)) ]; then
>                 echo "[fail] got $tx_rate% usage, expected $expected_rate%"
>                 fail_test
>         else
> --
> 2.34.1
>
>

Re: [PATCH mptcp-next v3 11/12] selftests: mptcp: join: make it shellcheck compliant

[Matthieu Baerts]

Hi Geliang,

On 24/02/2022 15:34, Geliang Tang wrote:
> Matthieu Baerts <matthieu.baerts@tessares.net> 于2022年2月24日周四 21:57写道：

(...)

>> @@ -713,7 +716,7 @@ do_transfer()
>>                                         ./mptcp_connect -t ${timeout_poll} -p $port -s ${cl_proto} \
>>                                                 $extra_args $connect_addr > "$cout" &
>>         else
>> -               cat "$cinfail" | tee "$cinsent" | \
>> +               tee "$cinsent"< "$cinfail" | \
> 
> Here a space is missing before '<'.

Good point, I accidentally removed it just before the "commit --amend"
apparently...

Cheers,
Matt
-- 
Tessares | Belgium | Hybrid Access Solutions
www.tessares.net

[PATCH mptcp-next v3 12/12] selftests: mptcp: join: helper to filter TCP

[Matthieu Baerts]

This is more readable and reduces duplicated commands.

This might also be useful to add v6 support and switch to nftables.

Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
---
 tools/testing/selftests/net/mptcp/mptcp_join.sh | 15 ++++++++++++---
 1 file changed, 12 insertions(+), 3 deletions(-)

diff --git a/tools/testing/selftests/net/mptcp/mptcp_join.sh b/tools/testing/selftests/net/mptcp/mptcp_join.sh
index 20ec31b05990..977e5eb28ba4 100755
--- a/tools/testing/selftests/net/mptcp/mptcp_join.sh
+++ b/tools/testing/selftests/net/mptcp/mptcp_join.sh
@@ -624,6 +624,15 @@ pm_nl_check_endpoint()
 	fi
 }
 
+filter_tcp_from()
+{
+	local ns="${1}"
+	local src="${2}"
+	local target="${3}"
+
+	ip netns exec "${ns}" iptables -A INPUT -s "${src}" -p tcp -j "${target}"
+}
+
 do_transfer()
 {
 	local listener_ns="$1"
@@ -1653,7 +1662,7 @@ subflows_error_tests()
 		pm_nl_set_limits $ns2 0 2
 		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
 		pm_nl_add_endpoint $ns2 10.0.2.2 flags subflow
-		ip netns exec $ns1 iptables -A INPUT -s 10.0.3.2 -p tcp -j REJECT
+		filter_tcp_from $ns1 10.0.3.2 REJECT
 		run_tests $ns1 $ns2 10.0.1.1 0 0 0 slow
 		chk_join_nr 1 1 1
 	fi
@@ -1664,7 +1673,7 @@ subflows_error_tests()
 		pm_nl_set_limits $ns2 0 2
 		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
 		pm_nl_add_endpoint $ns2 10.0.2.2 flags subflow
-		ip netns exec $ns1 iptables -A INPUT -s 10.0.3.2 -p tcp -j DROP
+		filter_tcp_from $ns1 10.0.3.2 DROP
 		run_tests $ns1 $ns2 10.0.1.1 0 0 0 slow
 		chk_join_nr 1 1 1
 	fi
@@ -1676,7 +1685,7 @@ subflows_error_tests()
 		pm_nl_set_limits $ns1 0 1
 		pm_nl_set_limits $ns2 0 1
 		pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
-		ip netns exec $ns1 iptables -A INPUT -s 10.0.3.2 -p tcp -j REJECT
+		filter_tcp_from $ns1 10.0.3.2 REJECT
 		run_tests $ns1 $ns2 10.0.1.1 0 0 0 slow &
 
 		# mpj subflow will be in TW after the reset
-- 
2.34.1

Re: [PATCH mptcp-next v3 12/12] selftests: mptcp: join: helper to filter TCP

[Geliang Tang]

Hi Matt,

Matthieu Baerts <matthieu.baerts@tessares.net> 于2022年2月24日周四 21:57写道：
>
> This is more readable and reduces duplicated commands.
>
> This might also be useful to add v6 support and switch to nftables.
>
> Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
> ---
>  tools/testing/selftests/net/mptcp/mptcp_join.sh | 15 ++++++++++++---
>  1 file changed, 12 insertions(+), 3 deletions(-)
>
> diff --git a/tools/testing/selftests/net/mptcp/mptcp_join.sh b/tools/testing/selftests/net/mptcp/mptcp_join.sh
> index 20ec31b05990..977e5eb28ba4 100755
> --- a/tools/testing/selftests/net/mptcp/mptcp_join.sh
> +++ b/tools/testing/selftests/net/mptcp/mptcp_join.sh
> @@ -624,6 +624,15 @@ pm_nl_check_endpoint()
>         fi
>  }
>
> +filter_tcp_from()
> +{
> +       local ns="${1}"
> +       local src="${2}"
> +       local target="${3}"
> +
> +       ip netns exec "${ns}" iptables -A INPUT -s "${src}" -p tcp -j "${target}"

How about being compatible with ip6tables too, like in
reset_with_add_addr_timeout().

> +}
> +
>  do_transfer()
>  {
>         local listener_ns="$1"
> @@ -1653,7 +1662,7 @@ subflows_error_tests()
>                 pm_nl_set_limits $ns2 0 2
>                 pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
>                 pm_nl_add_endpoint $ns2 10.0.2.2 flags subflow
> -               ip netns exec $ns1 iptables -A INPUT -s 10.0.3.2 -p tcp -j REJECT
> +               filter_tcp_from $ns1 10.0.3.2 REJECT
>                 run_tests $ns1 $ns2 10.0.1.1 0 0 0 slow
>                 chk_join_nr 1 1 1
>         fi
> @@ -1664,7 +1673,7 @@ subflows_error_tests()
>                 pm_nl_set_limits $ns2 0 2
>                 pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
>                 pm_nl_add_endpoint $ns2 10.0.2.2 flags subflow
> -               ip netns exec $ns1 iptables -A INPUT -s 10.0.3.2 -p tcp -j DROP
> +               filter_tcp_from $ns1 10.0.3.2 DROP
>                 run_tests $ns1 $ns2 10.0.1.1 0 0 0 slow
>                 chk_join_nr 1 1 1
>         fi
> @@ -1676,7 +1685,7 @@ subflows_error_tests()
>                 pm_nl_set_limits $ns1 0 1
>                 pm_nl_set_limits $ns2 0 1
>                 pm_nl_add_endpoint $ns2 10.0.3.2 flags subflow
> -               ip netns exec $ns1 iptables -A INPUT -s 10.0.3.2 -p tcp -j REJECT
> +               filter_tcp_from $ns1 10.0.3.2 REJECT
>                 run_tests $ns1 $ns2 10.0.1.1 0 0 0 slow &
>
>                 # mpj subflow will be in TW after the reset
> --
> 2.34.1
>
>

Re: [PATCH mptcp-next v3 12/12] selftests: mptcp: join: helper to filter TCP

[Matthieu Baerts]

Hi Geliang,

On 24/02/2022 15:39, Geliang Tang wrote:
> Hi Matt,
> 
> Matthieu Baerts <matthieu.baerts@tessares.net> 于2022年2月24日周四 21:57写道：
>>
>> This is more readable and reduces duplicated commands.
>>
>> This might also be useful to add v6 support and switch to nftables.
>>
>> Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
>> ---
>>  tools/testing/selftests/net/mptcp/mptcp_join.sh | 15 ++++++++++++---
>>  1 file changed, 12 insertions(+), 3 deletions(-)
>>
>> diff --git a/tools/testing/selftests/net/mptcp/mptcp_join.sh b/tools/testing/selftests/net/mptcp/mptcp_join.sh
>> index 20ec31b05990..977e5eb28ba4 100755
>> --- a/tools/testing/selftests/net/mptcp/mptcp_join.sh
>> +++ b/tools/testing/selftests/net/mptcp/mptcp_join.sh
>> @@ -624,6 +624,15 @@ pm_nl_check_endpoint()
>>         fi
>>  }
>>
>> +filter_tcp_from()
>> +{
>> +       local ns="${1}"
>> +       local src="${2}"
>> +       local target="${3}"
>> +
>> +       ip netns exec "${ns}" iptables -A INPUT -s "${src}" -p tcp -j "${target}"
> 
> How about being compatible with ip6tables too, like in
> reset_with_add_addr_timeout().

I started to add it but because there were no need for the moment, I
only added a comment in the commit message. It can easily be added in
one place later.
Or do you think it should be done now?

Cheers,
Matt
-- 
Tessares | Belgium | Hybrid Access Solutions
www.tessares.net

Re: selftests: mptcp: join: helper to filter TCP: Tests Results

[MPTCP CI]

Hi Matthieu,

Thank you for your modifications, that's great!

Our CI did some validations and here is its report:

- KVM Validation: normal:
  - Unstable: 1 failed test(s): selftest_mptcp_join 🔴:
  - Task: https://cirrus-ci.com/task/5434161388322816
  - Summary: https://api.cirrus-ci.com/v1/artifact/task/5434161388322816/summary/summary.txt

- KVM Validation: debug:
  - Unstable: 1 failed test(s): selftest_mptcp_join 🔴:
  - Task: https://cirrus-ci.com/task/6560061295165440
  - Summary: https://api.cirrus-ci.com/v1/artifact/task/6560061295165440/summary/summary.txt

Initiator: Patchew Applier
Commits: https://github.com/multipath-tcp/mptcp_net-next/commits/c4be22d32c97

Please note that despite all the efforts that have been already done to have a
stable tests suite when executed on a public CI like here, it is possible some
reported issues are not due to your modifications. Still, do not hesitate to
help us improve that ;-)

Cheers,
MPTCP GH Action bot
Bot operated by Matthieu Baerts (Tessares)