From e5fd34ab8dff6c5bd4f2e9ee4f3945b79e511068 Mon Sep 17 00:00:00 2001
From: Ralf Lici <ralf@mandelbit.com>
Date: Tue, 24 Mar 2026 08:48:57 +0100
Subject: [PATCH 1/6] selftests: ovpn: add nftables config dependencies for
 test-mark

test-mark.sh installs nftables rules in an inet/filter output chain and
verifies packet drops via nft counters. In vmksft this can fail when the
nftables core is not enabled by the ovpn selftest config.

Add the missing kernel options required by this test:
- CONFIG_NETFILTER
- CONFIG_NF_TABLES
- CONFIG_NF_TABLES_INET

Fixes: 7b80d8a33500 ("selftests: ovpn: add test for the FW mark feature")
Reported-by: Jakub Kicinski <kuba@kernel.org>
Closes: https://lore.kernel.org/all/20260319124114.42f91f72@kernel.org/
Signed-off-by: Ralf Lici <ralf@mandelbit.com>
Signed-off-by: Antonio Quartulli <antonio@openvpn.net>
---
 tools/testing/selftests/net/ovpn/config | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/tools/testing/selftests/net/ovpn/config b/tools/testing/selftests/net/ovpn/config
index 42699740936d..d6cf033d555e 100644
--- a/tools/testing/selftests/net/ovpn/config
+++ b/tools/testing/selftests/net/ovpn/config
@@ -5,6 +5,9 @@ CONFIG_CRYPTO_GCM=y
 CONFIG_DST_CACHE=y
 CONFIG_INET=y
 CONFIG_NET=y
+CONFIG_NETFILTER=y
 CONFIG_NET_UDP_TUNNEL=y
+CONFIG_NF_TABLES=m
+CONFIG_NF_TABLES_INET=y
 CONFIG_OVPN=m
 CONFIG_STREAM_PARSER=y

From c409da0fe15e2b2aae7f93edbab977e23117ce4d Mon Sep 17 00:00:00 2001
From: Ralf Lici <ralf@mandelbit.com>
Date: Mon, 23 Mar 2026 15:32:26 +0100
Subject: [PATCH 2/6] selftests: ovpn: fail notification check on mismatch

compare_ntfs doesn't fail when expected and received notification
streams diverge.

Fix this bug by tracking the diff exit status explicitly and return it
to the caller so notification mismatches propagate as test failures.

Fixes: 77de28cd7cf1 ("selftests: ovpn: add notification parsing and matching")
Signed-off-by: Ralf Lici <ralf@mandelbit.com>
Signed-off-by: Antonio Quartulli <antonio@openvpn.net>
---
 tools/testing/selftests/net/ovpn/common.sh | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/tools/testing/selftests/net/ovpn/common.sh b/tools/testing/selftests/net/ovpn/common.sh
index 4c08f756e63a..c92415aaddfc 100644
--- a/tools/testing/selftests/net/ovpn/common.sh
+++ b/tools/testing/selftests/net/ovpn/common.sh
@@ -140,23 +140,35 @@ add_peer() {
 }
 
 compare_ntfs() {
+	local diff_rc=0
+	local diff_file
+
 	if [ ${#tmp_jsons[@]} -gt 0 ]; then
 		suffix=""
 		[ "${SYMMETRIC_ID}" -eq 1 ] && suffix="${suffix}-symm"
 		[ "$FLOAT" == 1 ] && suffix="${suffix}-float"
 		expected="json/peer${1}${suffix}.json"
 		received="${tmp_jsons[$1]}"
+		diff_file=$(mktemp)
 
 		kill -TERM ${listener_pids[$1]} || true
 		wait ${listener_pids[$1]} || true
 		printf "Checking notifications for peer ${1}... "
 		if diff <(jq -s "${JQ_FILTER}" ${expected}) \
-			<(jq -s "${JQ_FILTER}" ${received}); then
+			<(jq -s "${JQ_FILTER}" ${received}) \
+			>"${diff_file}" 2>&1; then
 			echo "OK"
+		else
+			diff_rc=$?
+			echo "failed"
+			cat "${diff_file}"
 		fi
 
+		rm -f "${diff_file}" || true
 		rm -f ${received} || true
 	fi
+
+	return "${diff_rc}"
 }
 
 cleanup() {

From 222e7f8d1ca3aaebe7588a79bf64d9820813785c Mon Sep 17 00:00:00 2001
From: Ralf Lici <ralf@mandelbit.com>
Date: Tue, 24 Mar 2026 15:54:18 +0100
Subject: [PATCH 3/6] selftests: ovpn: flatten slurped notification JSON before
 filtering

Notification comparison uses jq -s, which slurps all inputs into an
array. Some inputs can be arrays themselves, and applying the .msg.peer
filter directly on those entries triggers jq type errors.

Expand any array-valued JSON items returned by jq -s before selecting
.msg.peer, so the filter handles both normal notification objects and []
entries without type errors.

Fixes: 77de28cd7cf1 ("selftests: ovpn: add notification parsing and matching")
Signed-off-by: Ralf Lici <ralf@mandelbit.com>
Signed-off-by: Antonio Quartulli <antonio@openvpn.net>
---
 tools/testing/selftests/net/ovpn/common.sh | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tools/testing/selftests/net/ovpn/common.sh b/tools/testing/selftests/net/ovpn/common.sh
index c92415aaddfc..d3b322e84fab 100644
--- a/tools/testing/selftests/net/ovpn/common.sh
+++ b/tools/testing/selftests/net/ovpn/common.sh
@@ -15,7 +15,8 @@ SYMMETRIC_ID=${SYMMETRIC_ID:-0}
 
 export ID_OFFSET=$(( 9 * (SYMMETRIC_ID == 0) ))
 
-JQ_FILTER='map(select(.msg.peer | has("remote-ipv6") | not)) |
+JQ_FILTER='map(if type == "array" then .[] else . end) |
+	map(select(.msg.peer | has("remote-ipv6") | not)) |
 	map(del(.msg.ifindex)) | sort_by(.msg.peer.id)[]'
 LAN_IP="11.11.11.11"
 

From 7c29665a3a3cce1b0e9d6b96054eef64bfc4cebd Mon Sep 17 00:00:00 2001
From: Ralf Lici <ralf@mandelbit.com>
Date: Fri, 20 Mar 2026 17:29:38 +0100
Subject: [PATCH 4/6] selftests: ovpn: add prefix to helpers and shared
 variables

Current naming for shared variables, helpers and netnamespaces is
a bit unfortunate as it doesn't come with a clean prefix.
This showed to be problematic in case of name clashes with external
scripts or in case of abrupt test termination (hanging netns' weren't
easily reconducible to ovpn).

Rename common helper entry points and all shared globals in the ovpn
selftests to ovpn_ or OVPN_ names so test scripts and wrappers use a
single explicit prefix. Also rename the temporary network namespaces
created by the tests from peerN to ovpn_peerN. This makes leaked
namespaces easier to identify.

This is a mechanical refactor only, behavior is unchanged.

Fixes: 959bc330a439 ("testing/selftests: add test tool and scripts for ovpn module")
Signed-off-by: Ralf Lici <ralf@mandelbit.com>
Signed-off-by: Antonio Quartulli <antonio@openvpn.net>
---
 tools/testing/selftests/net/ovpn/common.sh    | 182 ++++++++++--------
 .../selftests/net/ovpn/test-chachapoly.sh     |   2 +-
 .../net/ovpn/test-close-socket-tcp.sh         |   2 +-
 .../selftests/net/ovpn/test-close-socket.sh   |  32 +--
 .../testing/selftests/net/ovpn/test-float.sh  |   2 +-
 tools/testing/selftests/net/ovpn/test-mark.sh |  45 ++---
 .../net/ovpn/test-symmetric-id-float.sh       |   4 +-
 .../net/ovpn/test-symmetric-id-tcp.sh         |   4 +-
 .../selftests/net/ovpn/test-symmetric-id.sh   |   2 +-
 tools/testing/selftests/net/ovpn/test-tcp.sh  |   2 +-
 tools/testing/selftests/net/ovpn/test.sh      | 139 ++++++-------
 11 files changed, 224 insertions(+), 192 deletions(-)

diff --git a/tools/testing/selftests/net/ovpn/common.sh b/tools/testing/selftests/net/ovpn/common.sh
index d3b322e84fab..38f187b9de23 100644
--- a/tools/testing/selftests/net/ovpn/common.sh
+++ b/tools/testing/selftests/net/ovpn/common.sh
@@ -4,63 +4,72 @@
 #
 #  Author:	Antonio Quartulli <antonio@openvpn.net>
 
-UDP_PEERS_FILE=${UDP_PEERS_FILE:-udp_peers.txt}
-TCP_PEERS_FILE=${TCP_PEERS_FILE:-tcp_peers.txt}
+OVPN_UDP_PEERS_FILE=${OVPN_UDP_PEERS_FILE:-udp_peers.txt}
+OVPN_TCP_PEERS_FILE=${OVPN_TCP_PEERS_FILE:-tcp_peers.txt}
 OVPN_CLI=${OVPN_CLI:-./ovpn-cli}
-YNL_CLI=${YNL_CLI:-../../../../net/ynl/pyynl/cli.py}
-ALG=${ALG:-aes}
-PROTO=${PROTO:-UDP}
-FLOAT=${FLOAT:-0}
-SYMMETRIC_ID=${SYMMETRIC_ID:-0}
+OVPN_YNL=${OVPN_YNL:-../../../../net/ynl/pyynl/cli.py}
+OVPN_ALG=${OVPN_ALG:-aes}
+OVPN_PROTO=${OVPN_PROTO:-UDP}
+OVPN_FLOAT=${OVPN_FLOAT:-0}
+OVPN_SYMMETRIC_ID=${OVPN_SYMMETRIC_ID:-0}
 
-export ID_OFFSET=$(( 9 * (SYMMETRIC_ID == 0) ))
+export OVPN_ID_OFFSET=$(( 9 * (OVPN_SYMMETRIC_ID == 0) ))
 
-JQ_FILTER='map(if type == "array" then .[] else . end) |
+OVPN_JQ_FILTER='map(if type == "array" then .[] else . end) |
 	map(select(.msg.peer | has("remote-ipv6") | not)) |
 	map(del(.msg.ifindex)) | sort_by(.msg.peer.id)[]'
-LAN_IP="11.11.11.11"
+OVPN_LAN_IP="11.11.11.11"
 
-declare -A tmp_jsons=()
-declare -A listener_pids=()
+declare -A OVPN_TMP_JSONS=()
+declare -A OVPN_LISTENER_PIDS=()
 
-create_ns() {
-	ip netns add peer${1}
+ovpn_create_ns() {
+	ip netns add "ovpn_peer${1}"
 }
 
-setup_ns() {
+ovpn_setup_ns() {
+	local peer="ovpn_peer${1}"
+	local server_ns="ovpn_peer0"
+	local peer_ns
 	MODE="P2P"
 
 	if [ ${1} -eq 0 ]; then
 		MODE="MP"
-		for p in $(seq 1 ${NUM_PEERS}); do
-			ip link add veth${p} netns peer0 type veth peer name veth${p} netns peer${p}
+		for p in $(seq 1 ${OVPN_NUM_PEERS}); do
+			peer_ns="ovpn_peer${p}"
+			ip link add veth${p} netns "${server_ns}" type veth \
+				peer name veth${p} netns "${peer_ns}"
 
-			ip -n peer0 addr add 10.10.${p}.1/24 dev veth${p}
-			ip -n peer0 addr add fd00:0:0:${p}::1/64 dev veth${p}
-			ip -n peer0 link set veth${p} up
+			ip -n "${server_ns}" addr add 10.10.${p}.1/24 dev \
+				veth${p}
+			ip -n "${server_ns}" addr add fd00:0:0:${p}::1/64 dev \
+				veth${p}
+			ip -n "${server_ns}" link set veth${p} up
 
-			ip -n peer${p} addr add 10.10.${p}.2/24 dev veth${p}
-			ip -n peer${p} addr add fd00:0:0:${p}::2/64 dev veth${p}
-			ip -n peer${p} link set veth${p} up
+			ip -n "${peer_ns}" addr add 10.10.${p}.2/24 dev veth${p}
+			ip -n "${peer_ns}" addr add fd00:0:0:${p}::2/64 dev \
+				veth${p}
+			ip -n "${peer_ns}" link set veth${p} up
 		done
 	fi
 
-	ip netns exec peer${1} ${OVPN_CLI} new_iface tun${1} $MODE
-	ip -n peer${1} addr add ${2} dev tun${1}
+	ip netns exec "${peer}" ${OVPN_CLI} new_iface tun${1} $MODE
+	ip -n "${peer}" addr add ${2} dev tun${1}
 	# add a secondary IP to peer 1, to test a LAN behind a client
-	if [ ${1} -eq 1 -a -n "${LAN_IP}" ]; then
-		ip -n peer${1} addr add ${LAN_IP} dev tun${1}
-		ip -n peer0 route add ${LAN_IP} via $(echo ${2} |sed -e s'!/.*!!') dev tun0
+	if [ ${1} -eq 1 -a -n "${OVPN_LAN_IP}" ]; then
+		ip -n "${peer}" addr add ${OVPN_LAN_IP} dev tun${1}
+		ip -n "${server_ns}" route add ${OVPN_LAN_IP} via \
+			$(echo ${2} |sed -e s'!/.*!!') dev tun0
 	fi
 	if [ -n "${3}" ]; then
-		ip -n peer${1} link set mtu ${3} dev tun${1}
+		ip -n "${peer}" link set mtu ${3} dev tun${1}
 	fi
-	ip -n peer${1} link set tun${1} up
+	ip -n "${peer}" link set tun${1} up
 }
 
-build_capture_filter() {
+ovpn_build_capture_filter() {
 	# match the first four bytes of the openvpn data payload
-	if [ "${PROTO}" == "UDP" ]; then
+	if [ "${OVPN_PROTO}" == "UDP" ]; then
 		# For UDP, libpcap transport indexing only works for IPv4, so
 		# use an explicit IPv4 or IPv6 expression based on the peer
 		# address. The IPv6 branch assumes there are no extension
@@ -77,86 +86,98 @@ build_capture_filter() {
 	fi
 }
 
-setup_listener() {
+ovpn_setup_listener() {
+	local peer_ns="ovpn_peer${p}"
 	file=$(mktemp)
-	PYTHONUNBUFFERED=1 ip netns exec peer${p} ${YNL_CLI} --family ovpn \
-		--subscribe peers --output-json --duration 40 > ${file} &
-	listener_pids[$1]=$!
-	tmp_jsons[$1]="${file}"
+	PYTHONUNBUFFERED=1 ip netns exec "${peer_ns}" "${OVPN_YNL}" --family \
+		ovpn --subscribe peers --output-json --duration 40 > ${file} &
+	OVPN_LISTENER_PIDS[$1]=$!
+	OVPN_TMP_JSONS[$1]="${file}"
 }
 
-add_peer() {
+ovpn_add_peer() {
 	labels=("ASYMM" "SYMM")
-	M_ID=${labels[SYMMETRIC_ID]}
+	local peer_ns
+	local server_ns="ovpn_peer0"
+	M_ID=${labels[OVPN_SYMMETRIC_ID]}
 
-	if [ "${PROTO}" == "UDP" ]; then
+	if [ "${OVPN_PROTO}" == "UDP" ]; then
 		if [ ${1} -eq 0 ]; then
-			ip netns exec peer0 ${OVPN_CLI} new_multi_peer tun0 1 \
-				${M_ID} ${UDP_PEERS_FILE}
+			ip netns exec "${server_ns}" ${OVPN_CLI} \
+				new_multi_peer tun0 1 ${M_ID} \
+				${OVPN_UDP_PEERS_FILE}
 
-			for p in $(seq 1 ${NUM_PEERS}); do
-				ip netns exec peer0 ${OVPN_CLI} new_key tun0 ${p} 1 0 ${ALG} 0 \
+			for p in $(seq 1 ${OVPN_NUM_PEERS}); do
+				ip netns exec "${server_ns}" ${OVPN_CLI} \
+					new_key tun0 ${p} 1 0 ${OVPN_ALG} 0 \
 					data64.key
 			done
 		else
-			if [ "${SYMMETRIC_ID}" -eq 1 ]; then
+			peer_ns="ovpn_peer${1}"
+			if [ "${OVPN_SYMMETRIC_ID}" -eq 1 ]; then
 				PEER_ID=${1}
 				TX_ID="none"
 			else
 				PEER_ID=$(awk "NR == ${1} {print \$2}" \
-					${UDP_PEERS_FILE})
+					${OVPN_UDP_PEERS_FILE})
 				TX_ID=${1}
 			fi
-			RADDR=$(awk "NR == ${1} {print \$3}" ${UDP_PEERS_FILE})
-			RPORT=$(awk "NR == ${1} {print \$4}" ${UDP_PEERS_FILE})
-			LPORT=$(awk "NR == ${1} {print \$6}" ${UDP_PEERS_FILE})
-			ip netns exec peer${1} ${OVPN_CLI} new_peer tun${1} \
-				${PEER_ID} ${TX_ID} ${LPORT} ${RADDR} ${RPORT}
-			ip netns exec peer${1} ${OVPN_CLI} new_key tun${1} \
-				${PEER_ID} 1 0 ${ALG} 1 data64.key
+			RADDR=$(awk "NR == ${1} {print \$3}" \
+				${OVPN_UDP_PEERS_FILE})
+			RPORT=$(awk "NR == ${1} {print \$4}" \
+				${OVPN_UDP_PEERS_FILE})
+			LPORT=$(awk "NR == ${1} {print \$6}" \
+				${OVPN_UDP_PEERS_FILE})
+			ip netns exec "${peer_ns}" ${OVPN_CLI} new_peer \
+				tun${1} ${PEER_ID} ${TX_ID} ${LPORT} ${RADDR} \
+				${RPORT}
+			ip netns exec "${peer_ns}" ${OVPN_CLI} new_key tun${1} \
+				${PEER_ID} 1 0 ${OVPN_ALG} 1 data64.key
 		fi
 	else
 		if [ ${1} -eq 0 ]; then
-			(ip netns exec peer0 ${OVPN_CLI} listen tun0 1 ${M_ID} \
-				${TCP_PEERS_FILE} && {
-				for p in $(seq 1 ${NUM_PEERS}); do
-					ip netns exec peer0 ${OVPN_CLI} new_key tun0 ${p} 1 0 \
-						${ALG} 0 data64.key
+			(ip netns exec "${server_ns}" ${OVPN_CLI} listen tun0 \
+				1 ${M_ID} ${OVPN_TCP_PEERS_FILE} && {
+				for p in $(seq 1 ${OVPN_NUM_PEERS}); do
+					ip netns exec "${server_ns}" \
+						${OVPN_CLI} new_key tun0 ${p} \
+						1 0 ${OVPN_ALG} 0 data64.key
 				done
 			}) &
 			sleep 5
 		else
-			if [ "${SYMMETRIC_ID}" -eq 1 ]; then
+			peer_ns="ovpn_peer${1}"
+			if [ "${OVPN_SYMMETRIC_ID}" -eq 1 ]; then
 				PEER_ID=${1}
 				TX_ID="none"
 			else
 				PEER_ID=$(awk "NR == ${1} {print \$2}" \
-					${TCP_PEERS_FILE})
+					${OVPN_TCP_PEERS_FILE})
 				TX_ID=${1}
 			fi
-			ip netns exec peer${1} ${OVPN_CLI} connect tun${1} \
+			ip netns exec "${peer_ns}" ${OVPN_CLI} connect tun${1} \
 				${PEER_ID} ${TX_ID} 10.10.${1}.1 1 data64.key
 		fi
 	fi
 }
 
-compare_ntfs() {
+ovpn_compare_ntfs() {
 	local diff_rc=0
 	local diff_file
 
-	if [ ${#tmp_jsons[@]} -gt 0 ]; then
+	if [ ${#OVPN_TMP_JSONS[@]} -gt 0 ]; then
 		suffix=""
-		[ "${SYMMETRIC_ID}" -eq 1 ] && suffix="${suffix}-symm"
-		[ "$FLOAT" == 1 ] && suffix="${suffix}-float"
+		[ "${OVPN_SYMMETRIC_ID}" -eq 1 ] && suffix="${suffix}-symm"
+		[ "$OVPN_FLOAT" == 1 ] && suffix="${suffix}-float"
 		expected="json/peer${1}${suffix}.json"
-		received="${tmp_jsons[$1]}"
+		received="${OVPN_TMP_JSONS[$1]}"
 		diff_file=$(mktemp)
 
-		kill -TERM ${listener_pids[$1]} || true
-		wait ${listener_pids[$1]} || true
+		kill -TERM ${OVPN_LISTENER_PIDS[$1]} || true
+		wait ${OVPN_LISTENER_PIDS[$1]} || true
 		printf "Checking notifications for peer ${1}... "
-		if diff <(jq -s "${JQ_FILTER}" ${expected}) \
-			<(jq -s "${JQ_FILTER}" ${received}) \
+		if diff <(jq -s "${OVPN_JQ_FILTER}" ${expected}) \
+			<(jq -s "${OVPN_JQ_FILTER}" ${received}) \
 			>"${diff_file}" 2>&1; then
 			echo "OK"
 		else
@@ -172,25 +193,30 @@ compare_ntfs() {
 	return "${diff_rc}"
 }
 
-cleanup() {
+ovpn_cleanup() {
+	local peer_ns
 	# some ovpn-cli processes sleep in background so they need manual poking
 	killall $(basename ${OVPN_CLI}) 2>/dev/null || true
 
 	# netns peer0 is deleted without erasing ifaces first
 	for p in $(seq 1 10); do
-		ip -n peer${p} link set tun${p} down 2>/dev/null || true
-		ip netns exec peer${p} ${OVPN_CLI} del_iface tun${p} 2>/dev/null || true
+		peer_ns="ovpn_peer${p}"
+		ip -n "${peer_ns}" link set tun${p} down 2>/dev/null || true
+		ip netns exec "${peer_ns}" ${OVPN_CLI} del_iface tun${p} \
+			2>/dev/null || true
 	done
 	for p in $(seq 1 10); do
-		ip -n peer0 link del veth${p} 2>/dev/null || true
+		ip -n ovpn_peer0 link del veth${p} 2>/dev/null || true
 	done
 	for p in $(seq 0 10); do
-		ip netns del peer${p} 2>/dev/null || true
+		ip netns del "ovpn_peer${p}" 2>/dev/null || true
 	done
 }
 
-if [ "${PROTO}" == "UDP" ]; then
-	NUM_PEERS=${NUM_PEERS:-$(wc -l ${UDP_PEERS_FILE} | awk '{print $1}')}
+if [ "${OVPN_PROTO}" == "UDP" ]; then
+	OVPN_NUM_PEERS=${OVPN_NUM_PEERS:-$(wc -l ${OVPN_UDP_PEERS_FILE} | \
+		awk '{print $1}')}
 else
-	NUM_PEERS=${NUM_PEERS:-$(wc -l ${TCP_PEERS_FILE} | awk '{print $1}')}
+	OVPN_NUM_PEERS=${OVPN_NUM_PEERS:-$(wc -l ${OVPN_TCP_PEERS_FILE} | \
+		awk '{print $1}')}
 fi
diff --git a/tools/testing/selftests/net/ovpn/test-chachapoly.sh b/tools/testing/selftests/net/ovpn/test-chachapoly.sh
index 32504079a2b8..cd3d94355d58 100755
--- a/tools/testing/selftests/net/ovpn/test-chachapoly.sh
+++ b/tools/testing/selftests/net/ovpn/test-chachapoly.sh
@@ -4,6 +4,6 @@
 #
 #  Author:	Antonio Quartulli <antonio@openvpn.net>
 
-ALG="chachapoly"
+OVPN_ALG="chachapoly"
 
 source test.sh
diff --git a/tools/testing/selftests/net/ovpn/test-close-socket-tcp.sh b/tools/testing/selftests/net/ovpn/test-close-socket-tcp.sh
index 093d44772ffd..392d269bada5 100755
--- a/tools/testing/selftests/net/ovpn/test-close-socket-tcp.sh
+++ b/tools/testing/selftests/net/ovpn/test-close-socket-tcp.sh
@@ -4,6 +4,6 @@
 #
 #  Author:	Antonio Quartulli <antonio@openvpn.net>
 
-PROTO="TCP"
+OVPN_PROTO="TCP"
 
 source test-close-socket.sh
diff --git a/tools/testing/selftests/net/ovpn/test-close-socket.sh b/tools/testing/selftests/net/ovpn/test-close-socket.sh
index 0d09df14fe8e..6bc1b6eab8ac 100755
--- a/tools/testing/selftests/net/ovpn/test-close-socket.sh
+++ b/tools/testing/selftests/net/ovpn/test-close-socket.sh
@@ -8,38 +8,40 @@
 set -e
 
 source ./common.sh
+server_ns="ovpn_peer0"
 
-cleanup
+ovpn_cleanup
 
 modprobe -q ovpn || true
 
-for p in $(seq 0 ${NUM_PEERS}); do
-	create_ns ${p}
+for p in $(seq 0 ${OVPN_NUM_PEERS}); do
+	ovpn_create_ns ${p}
 done
 
-for p in $(seq 0 ${NUM_PEERS}); do
-	setup_ns ${p} 5.5.5.$((${p} + 1))/24
+for p in $(seq 0 ${OVPN_NUM_PEERS}); do
+	ovpn_setup_ns ${p} 5.5.5.$((${p} + 1))/24
 done
 
-for p in $(seq 0 ${NUM_PEERS}); do
-	add_peer ${p}
+for p in $(seq 0 ${OVPN_NUM_PEERS}); do
+	ovpn_add_peer ${p}
 done
 
-for p in $(seq 1 ${NUM_PEERS}); do
-	ip netns exec peer0 ${OVPN_CLI} set_peer tun0 ${p} 60 120
-	ip netns exec peer${p} ${OVPN_CLI} set_peer tun${p} $((${p}+9)) 60 120
+for p in $(seq 1 ${OVPN_NUM_PEERS}); do
+	ip netns exec "${server_ns}" ${OVPN_CLI} set_peer tun0 ${p} 60 120
+	ip netns exec "ovpn_peer${p}" ${OVPN_CLI} set_peer tun${p} $((${p}+9)) \
+		60 120
 done
 
 sleep 1
 
-for p in $(seq 1 ${NUM_PEERS}); do
-	ip netns exec peer0 ping -qfc 500 -w 3 5.5.5.$((${p} + 1))
+for p in $(seq 1 ${OVPN_NUM_PEERS}); do
+	ip netns exec "${server_ns}" ping -qfc 500 -w 3 5.5.5.$((${p} + 1))
 done
 
-ip netns exec peer0 iperf3 -1 -s &
+ip netns exec "${server_ns}" iperf3 -1 -s &
 sleep 1
-ip netns exec peer1 iperf3 -Z -t 3 -c 5.5.5.1
+ip netns exec ovpn_peer1 iperf3 -Z -t 3 -c 5.5.5.1
 
-cleanup
+ovpn_cleanup
 
 modprobe -r ovpn || true
diff --git a/tools/testing/selftests/net/ovpn/test-float.sh b/tools/testing/selftests/net/ovpn/test-float.sh
index ba5d725e18b0..91f8e113718e 100755
--- a/tools/testing/selftests/net/ovpn/test-float.sh
+++ b/tools/testing/selftests/net/ovpn/test-float.sh
@@ -4,6 +4,6 @@
 #
 #  Author:	Antonio Quartulli <antonio@openvpn.net>
 
-FLOAT="1"
+OVPN_FLOAT="1"
 
 source test.sh
diff --git a/tools/testing/selftests/net/ovpn/test-mark.sh b/tools/testing/selftests/net/ovpn/test-mark.sh
index 8534428ed3eb..2ee5dc5fc538 100755
--- a/tools/testing/selftests/net/ovpn/test-mark.sh
+++ b/tools/testing/selftests/net/ovpn/test-mark.sh
@@ -11,62 +11,63 @@ set -e
 MARK=1056
 
 source ./common.sh
+server_ns="ovpn_peer0"
 
-cleanup
+ovpn_cleanup
 
 modprobe -q ovpn || true
 
-for p in $(seq 0 "${NUM_PEERS}"); do
-	create_ns "${p}"
+for p in $(seq 0 "${OVPN_NUM_PEERS}"); do
+	ovpn_create_ns "${p}"
 done
 
 for p in $(seq 0 3); do
-	setup_ns "${p}" 5.5.5.$((p + 1))/24
+	ovpn_setup_ns "${p}" 5.5.5.$((p + 1))/24
 done
 
 # add peer0 with mark
-ip netns exec peer0 "${OVPN_CLI}" new_multi_peer tun0 1 ASYMM \
-	"${UDP_PEERS_FILE}" \
+ip netns exec "${server_ns}" "${OVPN_CLI}" new_multi_peer tun0 1 ASYMM \
+	"${OVPN_UDP_PEERS_FILE}" \
 	${MARK}
 for p in $(seq 1 3); do
-	ip netns exec peer0 "${OVPN_CLI}" new_key tun0 "${p}" 1 0 "${ALG}" 0 \
-		data64.key
+	ip netns exec "${server_ns}" "${OVPN_CLI}" new_key tun0 "${p}" 1 0 \
+		"${OVPN_ALG}" 0 data64.key
 done
 
 for p in $(seq 1 3); do
-	add_peer "${p}"
+	ovpn_add_peer "${p}"
 done
 
 for p in $(seq 1 3); do
-	ip netns exec peer0 "${OVPN_CLI}" set_peer tun0 "${p}" 60 120
-	ip netns exec peer"${p}" "${OVPN_CLI}" set_peer tun"${p}" \
+	ip netns exec "${server_ns}" "${OVPN_CLI}" set_peer tun0 "${p}" 60 120
+	ip netns exec "ovpn_peer${p}" "${OVPN_CLI}" set_peer tun"${p}" \
 		$((p + 9)) 60 120
 done
 
 sleep 1
 
 for p in $(seq 1 3); do
-	ip netns exec peer0 ping -qfc 500 -w 3 5.5.5.$((p + 1))
+	ip netns exec "${server_ns}" ping -qfc 500 -w 3 5.5.5.$((p + 1))
 done
 
 echo "Adding an nftables drop rule based on mark value ${MARK}"
-ip netns exec peer0 nft flush ruleset
-ip netns exec peer0 nft 'add table inet filter'
-ip netns exec peer0 nft 'add chain inet filter output {
+ip netns exec "${server_ns}" nft flush ruleset
+ip netns exec "${server_ns}" nft 'add table inet filter'
+ip netns exec "${server_ns}" nft 'add chain inet filter output {
 	type filter hook output priority 0;
 	policy accept;
 }'
-ip netns exec peer0 nft add rule inet filter output \
+ip netns exec "${server_ns}" nft add rule inet filter output \
 	meta mark == ${MARK} \
 	counter drop
 
-DROP_COUNTER=$(ip netns exec peer0 nft list chain inet filter output \
+DROP_COUNTER=$(ip netns exec "${server_ns}" nft list chain inet filter output \
 	| sed -n 's/.*packets \([0-9]*\).*/\1/p')
 sleep 1
 
 # ping should fail
 for p in $(seq 1 3); do
-	PING_OUTPUT=$(ip netns exec peer0 ping \
+	PING_OUTPUT=$(ip netns exec "${server_ns}" ping \
 		-qfc 500 -w 1 5.5.5.$((p + 1)) 2>&1) && exit 1
 	echo "${PING_OUTPUT}"
 	LOST_PACKETS=$(echo "$PING_OUTPUT" \
@@ -76,7 +77,7 @@ for p in $(seq 1 3); do
 done
 
 # check if the final nft counter matches our counter
-TOTAL_COUNT=$(ip netns exec peer0 nft list chain inet filter output \
+TOTAL_COUNT=$(ip netns exec "${server_ns}" nft list chain inet filter output \
 	| sed -n 's/.*packets \([0-9]*\).*/\1/p')
 if [ "${DROP_COUNTER}" -ne "${TOTAL_COUNT}" ]; then
 	echo "Expected ${TOTAL_COUNT} drops, got ${DROP_COUNTER}"
@@ -84,13 +85,13 @@ if [ "${DROP_COUNTER}" -ne "${TOTAL_COUNT}" ]; then
 fi
 
 echo "Removing the drop rule"
-ip netns exec peer0 nft flush ruleset
+ip netns exec "${server_ns}" nft flush ruleset
 sleep 1
 
 for p in $(seq 1 3); do
-	ip netns exec peer0 ping -qfc 500 -w 3 5.5.5.$((p + 1))
+	ip netns exec "${server_ns}" ping -qfc 500 -w 3 5.5.5.$((p + 1))
 done
 
-cleanup
+ovpn_cleanup
 
 modprobe -r ovpn || true
diff --git a/tools/testing/selftests/net/ovpn/test-symmetric-id-float.sh b/tools/testing/selftests/net/ovpn/test-symmetric-id-float.sh
index b3711a81b463..75296fe72c39 100755
--- a/tools/testing/selftests/net/ovpn/test-symmetric-id-float.sh
+++ b/tools/testing/selftests/net/ovpn/test-symmetric-id-float.sh
@@ -5,7 +5,7 @@
 #	Author:	Ralf Lici <ralf@mandelbit.com>
 #		Antonio Quartulli <antonio@openvpn.net>
 
-SYMMETRIC_ID="1"
-FLOAT="1"
+OVPN_SYMMETRIC_ID="1"
+OVPN_FLOAT="1"
 
 source test.sh
diff --git a/tools/testing/selftests/net/ovpn/test-symmetric-id-tcp.sh b/tools/testing/selftests/net/ovpn/test-symmetric-id-tcp.sh
index 188cafb67b2f..680a465c49d2 100755
--- a/tools/testing/selftests/net/ovpn/test-symmetric-id-tcp.sh
+++ b/tools/testing/selftests/net/ovpn/test-symmetric-id-tcp.sh
@@ -5,7 +5,7 @@
 #	Author:	Ralf Lici <ralf@mandelbit.com>
 #		Antonio Quartulli <antonio@openvpn.net>
 
-PROTO="TCP"
-SYMMETRIC_ID=1
+OVPN_PROTO="TCP"
+OVPN_SYMMETRIC_ID=1
 
 source test.sh
diff --git a/tools/testing/selftests/net/ovpn/test-symmetric-id.sh b/tools/testing/selftests/net/ovpn/test-symmetric-id.sh
index 35b119c72e4f..a2e2808959d9 100755
--- a/tools/testing/selftests/net/ovpn/test-symmetric-id.sh
+++ b/tools/testing/selftests/net/ovpn/test-symmetric-id.sh
@@ -5,6 +5,6 @@
 #	Author:	Ralf Lici <ralf@mandelbit.com>
 #		Antonio Quartulli <antonio@openvpn.net>
 
-SYMMETRIC_ID="1"
+OVPN_SYMMETRIC_ID="1"
 
 source test.sh
diff --git a/tools/testing/selftests/net/ovpn/test-tcp.sh b/tools/testing/selftests/net/ovpn/test-tcp.sh
index ba3f1f315a34..27cc6e7b98bc 100755
--- a/tools/testing/selftests/net/ovpn/test-tcp.sh
+++ b/tools/testing/selftests/net/ovpn/test-tcp.sh
@@ -4,6 +4,6 @@
 #
 #  Author:	Antonio Quartulli <antonio@openvpn.net>
 
-PROTO="TCP"
+OVPN_PROTO="TCP"
 
 source test.sh
diff --git a/tools/testing/selftests/net/ovpn/test.sh b/tools/testing/selftests/net/ovpn/test.sh
index b60e94a4094e..b766f4842940 100755
--- a/tools/testing/selftests/net/ovpn/test.sh
+++ b/tools/testing/selftests/net/ovpn/test.sh
@@ -8,37 +8,38 @@
 set -e
 
 source ./common.sh
+server_ns="ovpn_peer0"
 
-cleanup
+ovpn_cleanup
 
 modprobe -q ovpn || true
 
-for p in $(seq 0 ${NUM_PEERS}); do
-	create_ns ${p}
+for p in $(seq 0 ${OVPN_NUM_PEERS}); do
+	ovpn_create_ns ${p}
 done
 
-for p in $(seq 0 ${NUM_PEERS}); do
-	setup_listener ${p}
+for p in $(seq 0 ${OVPN_NUM_PEERS}); do
+	ovpn_setup_listener ${p}
 done
 
-for p in $(seq 0 ${NUM_PEERS}); do
-	setup_ns ${p} 5.5.5.$((${p} + 1))/24 ${MTU}
+for p in $(seq 0 ${OVPN_NUM_PEERS}); do
+	ovpn_setup_ns ${p} 5.5.5.$((${p} + 1))/24 ${MTU}
 done
 
-for p in $(seq 0 ${NUM_PEERS}); do
-	add_peer ${p}
+for p in $(seq 0 ${OVPN_NUM_PEERS}); do
+	ovpn_add_peer ${p}
 done
 
-for p in $(seq 1 ${NUM_PEERS}); do
-	ip netns exec peer0 ${OVPN_CLI} set_peer tun0 ${p} 60 120
-	ip netns exec peer${p} ${OVPN_CLI} set_peer tun${p} \
-		$((${p}+ID_OFFSET)) 60 120
+for p in $(seq 1 ${OVPN_NUM_PEERS}); do
+	ip netns exec "${server_ns}" ${OVPN_CLI} set_peer tun0 ${p} 60 120
+	ip netns exec "ovpn_peer${p}" ${OVPN_CLI} set_peer tun${p} \
+		$((${p}+OVPN_ID_OFFSET)) 60 120
 done
 
 sleep 1
 
 TCPDUMP_TIMEOUT="1.5s"
-for p in $(seq 1 ${NUM_PEERS}); do
+for p in $(seq 1 ${OVPN_NUM_PEERS}); do
 	# The first part of the data packet header consists of:
 	# - TCP only: 2 bytes for the packet length
 	# - 5 bits for opcode ("9" for DATA_V2)
@@ -47,119 +48,121 @@ for p in $(seq 1 ${NUM_PEERS}); do
 	#     - with asymmetric ID: "${p}" one way and "${p} + 9" the other way
 	#     - with symmetric ID: "${p}" both ways
 	HEADER1=$(printf "0x4800000%x" ${p})
-	HEADER2=$(printf "0x4800000%x" $((${p} + ID_OFFSET)))
+	HEADER2=$(printf "0x4800000%x" $((${p} + OVPN_ID_OFFSET)))
 	RADDR=""
-	if [ "${PROTO}" == "UDP" ]; then
-		RADDR=$(awk "NR == ${p} {print \$3}" ${UDP_PEERS_FILE})
+	if [ "${OVPN_PROTO}" == "UDP" ]; then
+		RADDR=$(awk "NR == ${p} {print \$3}" ${OVPN_UDP_PEERS_FILE})
 	fi
 
-	timeout ${TCPDUMP_TIMEOUT} ip netns exec peer${p} \
+	timeout ${TCPDUMP_TIMEOUT} ip netns exec "ovpn_peer${p}" \
 		tcpdump --immediate-mode -p -ni veth${p} -c 1 \
-		"$(build_capture_filter "${HEADER1}" "${RADDR}")" \
+		"$(ovpn_build_capture_filter "${HEADER1}" "${RADDR}")" \
 		>/dev/null 2>&1 &
 	TCPDUMP_PID1=$!
-	timeout ${TCPDUMP_TIMEOUT} ip netns exec peer${p} \
+	timeout ${TCPDUMP_TIMEOUT} ip netns exec "ovpn_peer${p}" \
 		tcpdump --immediate-mode -p -ni veth${p} -c 1 \
-		"$(build_capture_filter "${HEADER2}" "${RADDR}")" \
+		"$(ovpn_build_capture_filter "${HEADER2}" "${RADDR}")" \
 		>/dev/null 2>&1 &
 	TCPDUMP_PID2=$!
 
 	sleep 0.3
-	ip netns exec peer0 ping -qfc 500 -w 3 5.5.5.$((${p} + 1))
-	ip netns exec peer0 ping -qfc 500 -s 3000 -w 3 5.5.5.$((${p} + 1))
+	ip netns exec "${server_ns}" ping -qfc 500 -w 3 5.5.5.$((${p} + 1))
+	ip netns exec "${server_ns}" ping -qfc 500 -s 3000 -w 3 \
+		5.5.5.$((${p} + 1))
 
 	wait ${TCPDUMP_PID1}
 	wait ${TCPDUMP_PID2}
 done
 
 # ping LAN behind client 1
-ip netns exec peer0 ping -qfc 500 -w 3 ${LAN_IP}
+ip netns exec "${server_ns}" ping -qfc 500 -w 3 ${OVPN_LAN_IP}
 
-if [ "$FLOAT" == "1" ]; then
+if [ "$OVPN_FLOAT" == "1" ]; then
 	# make clients float..
-	for p in $(seq 1 ${NUM_PEERS}); do
-		ip -n peer${p} addr del 10.10.${p}.2/24 dev veth${p}
-		ip -n peer${p} addr add 10.10.${p}.3/24 dev veth${p}
+	for p in $(seq 1 ${OVPN_NUM_PEERS}); do
+		ip -n "ovpn_peer${p}" addr del 10.10.${p}.2/24 dev veth${p}
+		ip -n "ovpn_peer${p}" addr add 10.10.${p}.3/24 dev veth${p}
 	done
-	for p in $(seq 1 ${NUM_PEERS}); do
-		ip netns exec peer${p} ping -qfc 500 -w 3 5.5.5.1
+	for p in $(seq 1 ${OVPN_NUM_PEERS}); do
+		ip netns exec "ovpn_peer${p}" ping -qfc 500 -w 3 5.5.5.1
 	done
 fi
 
-ip netns exec peer0 iperf3 -1 -s &
+ip netns exec "${server_ns}" iperf3 -1 -s &
 sleep 1
-ip netns exec peer1 iperf3 -Z -t 3 -c 5.5.5.1
+ip netns exec ovpn_peer1 iperf3 -Z -t 3 -c 5.5.5.1
 
 echo "Adding secondary key and then swap:"
-for p in $(seq 1 ${NUM_PEERS}); do
-	ip netns exec peer0 ${OVPN_CLI} new_key tun0 ${p} 2 1 ${ALG} 0 \
-		data64.key
-	ip netns exec peer${p} ${OVPN_CLI} new_key tun${p} \
-		$((${p} + ID_OFFSET)) 2 1 ${ALG} 1 data64.key
-	ip netns exec peer${p} ${OVPN_CLI} swap_keys tun${p} \
-		$((${p} + ID_OFFSET))
+for p in $(seq 1 ${OVPN_NUM_PEERS}); do
+	ip netns exec "${server_ns}" ${OVPN_CLI} new_key tun0 ${p} 2 1 \
+		${OVPN_ALG} 0 data64.key
+	ip netns exec "ovpn_peer${p}" ${OVPN_CLI} new_key tun${p} \
+		$((${p} + OVPN_ID_OFFSET)) 2 1 ${OVPN_ALG} 1 data64.key
+	ip netns exec "ovpn_peer${p}" ${OVPN_CLI} swap_keys tun${p} \
+		$((${p} + OVPN_ID_OFFSET))
 done
 
 sleep 1
 
 echo "Querying all peers:"
-ip netns exec peer0 ${OVPN_CLI} get_peer tun0
-ip netns exec peer1 ${OVPN_CLI} get_peer tun1
+ip netns exec "${server_ns}" ${OVPN_CLI} get_peer tun0
+ip netns exec ovpn_peer1 ${OVPN_CLI} get_peer tun1
 
 echo "Querying peer 1:"
-ip netns exec peer0 ${OVPN_CLI} get_peer tun0 1
+ip netns exec "${server_ns}" ${OVPN_CLI} get_peer tun0 1
 
 echo "Querying non-existent peer 20:"
-ip netns exec peer0 ${OVPN_CLI} get_peer tun0 20 || true
+ip netns exec "${server_ns}" ${OVPN_CLI} get_peer tun0 20 || true
 
 echo "Deleting peer 1:"
-ip netns exec peer0 ${OVPN_CLI} del_peer tun0 1
-ip netns exec peer1 ${OVPN_CLI} del_peer tun1 $((1 + ID_OFFSET))
+ip netns exec "${server_ns}" ${OVPN_CLI} del_peer tun0 1
+ip netns exec ovpn_peer1 ${OVPN_CLI} del_peer tun1 $((1 + OVPN_ID_OFFSET))
 
 echo "Querying keys:"
-for p in $(seq 2 ${NUM_PEERS}); do
-	ip netns exec peer${p} ${OVPN_CLI} get_key tun${p} \
-		$((${p} + ID_OFFSET)) 1
-	ip netns exec peer${p} ${OVPN_CLI} get_key tun${p} \
-		$((${p} + ID_OFFSET)) 2
+for p in $(seq 2 ${OVPN_NUM_PEERS}); do
+	ip netns exec "ovpn_peer${p}" ${OVPN_CLI} get_key tun${p} \
+		$((${p} + OVPN_ID_OFFSET)) 1
+	ip netns exec "ovpn_peer${p}" ${OVPN_CLI} get_key tun${p} \
+		$((${p} + OVPN_ID_OFFSET)) 2
 done
 
 echo "Deleting peer while sending traffic:"
-(ip netns exec peer2 ping -qf -w 4 5.5.5.1)&
+(ip netns exec ovpn_peer2 ping -qf -w 4 5.5.5.1)&
 sleep 2
-ip netns exec peer0 ${OVPN_CLI} del_peer tun0 2
+ip netns exec "${server_ns}" ${OVPN_CLI} del_peer tun0 2
 # following command fails in TCP mode
 # (both ends get conn reset when one peer disconnects)
-ip netns exec peer2 ${OVPN_CLI} del_peer tun2 $((2 + ID_OFFSET)) || true
+ip netns exec ovpn_peer2 ${OVPN_CLI} del_peer tun2 $((2 + OVPN_ID_OFFSET)) || \
+	true
 
 echo "Deleting keys:"
-for p in $(seq 3 ${NUM_PEERS}); do
-	ip netns exec peer${p} ${OVPN_CLI} del_key tun${p} \
-		$((${p} + ID_OFFSET)) 1
-	ip netns exec peer${p} ${OVPN_CLI} del_key tun${p} \
-		$((${p} + ID_OFFSET)) 2
+for p in $(seq 3 ${OVPN_NUM_PEERS}); do
+	ip netns exec "ovpn_peer${p}" ${OVPN_CLI} del_key tun${p} \
+		$((${p} + OVPN_ID_OFFSET)) 1
+	ip netns exec "ovpn_peer${p}" ${OVPN_CLI} del_key tun${p} \
+		$((${p} + OVPN_ID_OFFSET)) 2
 done
 
 echo "Setting timeout to 3s MP:"
-for p in $(seq 3 ${NUM_PEERS}); do
-	ip netns exec peer0 ${OVPN_CLI} set_peer tun0 ${p} 3 3 || true
-	ip netns exec peer${p} ${OVPN_CLI} set_peer tun${p} \
-		$((${p} + ID_OFFSET)) 0 0
+for p in $(seq 3 ${OVPN_NUM_PEERS}); do
+	ip netns exec "${server_ns}" ${OVPN_CLI} set_peer tun0 ${p} 3 3 || true
+	ip netns exec "ovpn_peer${p}" ${OVPN_CLI} set_peer tun${p} \
+		$((${p} + OVPN_ID_OFFSET)) 0 0
 done
 # wait for peers to timeout
 sleep 5
 
 echo "Setting timeout to 3s P2P:"
-for p in $(seq 3 ${NUM_PEERS}); do
-	ip netns exec peer${p} ${OVPN_CLI} set_peer tun${p} \
-		$((${p} + ID_OFFSET)) 3 3
+for p in $(seq 3 ${OVPN_NUM_PEERS}); do
+	ip netns exec "ovpn_peer${p}" ${OVPN_CLI} set_peer tun${p} \
+		$((${p} + OVPN_ID_OFFSET)) 3 3
 done
 sleep 5
 
-for p in $(seq 0 ${NUM_PEERS}); do
-	compare_ntfs ${p}
+for p in $(seq 0 ${OVPN_NUM_PEERS}); do
+	ovpn_compare_ntfs ${p}
 done
 
-cleanup
+ovpn_cleanup
 
 modprobe -r ovpn || true

From 1be93bb979ab02554541b04406e9e3a6a8e0ce9e Mon Sep 17 00:00:00 2001
From: Ralf Lici <ralf@mandelbit.com>
Date: Mon, 23 Mar 2026 15:12:32 +0100
Subject: [PATCH 5/6] selftests: ovpn: align command flow with TAP

Current tests do not properly adhere to the TAP infrastructure
therefore they do not properly report failures leading to hangs of
the CI machinery.

Restructure ovpn selftests into using the TAP infrastructure: split each
test in stages, execute stage bodies with fail-fast semantics, and emit
KTAP pass/fail for each stage.

Centralize behavior control in common.sh and makes the scripts use
dedicated wrappers for required-success, expected-failure, and non-fatal
commands. Also add the OVPN_VERBOSE mode that exposes captured command
output for debugging.
This way tests won't hang anymore in case of failure when executed
within the CI machinery.

This change also makes default OVPN_CLI and YNL resolution
independent from the caller CWD by anchoring both to COMMON_DIR, so
behavior is stable across direct execution and run_tests-style
execution.

Fixes: 959bc330a439 ("testing/selftests: add test tool and scripts for ovpn module")
Signed-off-by: Ralf Lici <ralf@mandelbit.com>
Signed-off-by: Antonio Quartulli <antonio@openvpn.net>
---
 tools/testing/selftests/net/ovpn/common.sh    | 186 +++++++-
 .../selftests/net/ovpn/test-close-socket.sh   | 104 +++--
 tools/testing/selftests/net/ovpn/test-mark.sh | 234 ++++++----
 tools/testing/selftests/net/ovpn/test.sh      | 427 ++++++++++++------
 4 files changed, 677 insertions(+), 274 deletions(-)

diff --git a/tools/testing/selftests/net/ovpn/common.sh b/tools/testing/selftests/net/ovpn/common.sh
index 38f187b9de23..2d844eb3aa6e 100644
--- a/tools/testing/selftests/net/ovpn/common.sh
+++ b/tools/testing/selftests/net/ovpn/common.sh
@@ -4,14 +4,18 @@
 #
 #  Author:	Antonio Quartulli <antonio@openvpn.net>
 
+OVPN_COMMON_DIR=$(dirname "$(readlink -f "${BASH_SOURCE[0]}")")
+source "$OVPN_COMMON_DIR/../../kselftest/ktap_helpers.sh"
+
 OVPN_UDP_PEERS_FILE=${OVPN_UDP_PEERS_FILE:-udp_peers.txt}
 OVPN_TCP_PEERS_FILE=${OVPN_TCP_PEERS_FILE:-tcp_peers.txt}
-OVPN_CLI=${OVPN_CLI:-./ovpn-cli}
-OVPN_YNL=${OVPN_YNL:-../../../../net/ynl/pyynl/cli.py}
+OVPN_CLI=${OVPN_CLI:-${OVPN_COMMON_DIR}/ovpn-cli}
+OVPN_YNL=${OVPN_YNL:-${OVPN_COMMON_DIR}/../../../../net/ynl/pyynl/cli.py}
 OVPN_ALG=${OVPN_ALG:-aes}
 OVPN_PROTO=${OVPN_PROTO:-UDP}
 OVPN_FLOAT=${OVPN_FLOAT:-0}
 OVPN_SYMMETRIC_ID=${OVPN_SYMMETRIC_ID:-0}
+OVPN_VERBOSE=${OVPN_VERBOSE:-0}
 
 export OVPN_ID_OFFSET=$(( 9 * (OVPN_SYMMETRIC_ID == 0) ))
 
@@ -22,6 +26,111 @@ OVPN_LAN_IP="11.11.11.11"
 
 declare -A OVPN_TMP_JSONS=()
 declare -A OVPN_LISTENER_PIDS=()
+OVPN_CURRENT_STAGE=""
+
+ovpn_is_verbose() {
+	[[ "${OVPN_VERBOSE}" == "1" ]]
+}
+
+ovpn_log() {
+	ovpn_is_verbose || return 0
+	printf '%s\n' "$*"
+}
+
+ovpn_print_cmd_output() {
+	local output_file="$1"
+	local line
+
+	[[ -s "${output_file}" ]] || return 0
+
+	while IFS= read -r line; do
+		ovpn_log "${line}"
+	done < "${output_file}"
+}
+
+ovpn_cmd_run() {
+	local mode="$1"
+	local label="$2"
+	local output_file
+	local rc
+	local ret=0
+
+	shift 2
+
+	output_file=$(mktemp)
+	if "$@" >"${output_file}" 2>&1; then
+		rc=0
+	else
+		rc=$?
+	fi
+
+	case "${mode}" in
+	ok)
+		if [[ "${rc}" -ne 0 ]]; then
+			cat "${output_file}"
+			printf '%s\n' \
+				"${label}: command failed with rc=${rc}: $*"
+			ret="${rc}"
+		fi
+		;;
+	mayfail)
+		;;
+	fail)
+		[[ "${rc}" -eq 0 ]] && ret=1
+		;;
+	esac
+
+	if ovpn_is_verbose && [[ "${rc}" -eq 0 || "${mode}" != "ok" ]]; then
+		ovpn_print_cmd_output "${output_file}"
+	fi
+
+	rm -f "${output_file}"
+	return "${ret}"
+}
+
+ovpn_cmd_ok() {
+	ovpn_cmd_run ok "$@"
+}
+
+ovpn_cmd_mayfail() {
+	ovpn_cmd_run mayfail "$@"
+}
+
+ovpn_cmd_fail() {
+	ovpn_cmd_run fail "$@"
+}
+
+ovpn_run_bg() {
+	local pid_var="$1"
+
+	shift
+	if ovpn_is_verbose; then
+		"$@" &
+	else
+		"$@" >/dev/null 2>&1 &
+	fi
+
+	printf -v "${pid_var}" '%s' "$!"
+}
+
+ovpn_run_stage() {
+	local label="$1"
+
+	shift
+	OVPN_CURRENT_STAGE="${label}"
+	"$@"
+	OVPN_CURRENT_STAGE=""
+	ktap_test_pass "${label}"
+}
+
+ovpn_stage_err() {
+	# ERR trap is global under set -eE: only report failures that happen
+	# while ovpn_run_stage() is actively executing a stage body.
+	if [[ -n "${OVPN_CURRENT_STAGE}" ]]; then
+		ktap_test_fail "${OVPN_CURRENT_STAGE}"
+		OVPN_CURRENT_STAGE=""
+	fi
+}
 
 ovpn_create_ns() {
 	ip netns add "ovpn_peer${1}"
@@ -87,12 +196,16 @@ ovpn_build_capture_filter() {
 }
 
 ovpn_setup_listener() {
-	local peer_ns="ovpn_peer${p}"
+	local peer="$1"
+	local file
+	local peer_ns="ovpn_peer${peer}"
+
 	file=$(mktemp)
 	PYTHONUNBUFFERED=1 ip netns exec "${peer_ns}" "${OVPN_YNL}" --family \
-		ovpn --subscribe peers --output-json --duration 40 > ${file} &
-	OVPN_LISTENER_PIDS[$1]=$!
-	OVPN_TMP_JSONS[$1]="${file}"
+		ovpn --subscribe peers --output-json > "${file}" \
+		2>/dev/null &
+	OVPN_LISTENER_PIDS["${peer}"]=$!
+	OVPN_TMP_JSONS["${peer}"]="${file}"
 }
 
 ovpn_add_peer() {
@@ -173,8 +286,7 @@ ovpn_compare_ntfs() {
 		received="${OVPN_TMP_JSONS[$1]}"
 		diff_file=$(mktemp)
 
-		kill -TERM ${OVPN_LISTENER_PIDS[$1]} || true
-		wait ${OVPN_LISTENER_PIDS[$1]} || true
+		ovpn_stop_listener "${1}" 1
 		printf "Checking notifications for peer ${1}... "
 		if diff <(jq -s "${OVPN_JQ_FILTER}" ${expected}) \
 			<(jq -s "${OVPN_JQ_FILTER}" ${received}) \
@@ -187,30 +299,60 @@ ovpn_compare_ntfs() {
 		fi
 
 		rm -f "${diff_file}" || true
-		rm -f ${received} || true
+		rm -f "${received}" || true
+		unset "OVPN_TMP_JSONS[$1]"
 	fi
 
 	return "${diff_rc}"
 }
 
-ovpn_cleanup() {
-	local peer_ns
-	# some ovpn-cli processes sleep in background so they need manual poking
-	killall $(basename ${OVPN_CLI}) 2>/dev/null || true
+ovpn_stop_listener() {
+	local peer="$1"
+	local keep_json="${2:-0}"
+	local pid="${OVPN_LISTENER_PIDS[$peer]:-}"
+	local json="${OVPN_TMP_JSONS[$peer]:-}"
 
-	# netns peer0 is deleted without erasing ifaces first
-	for p in $(seq 1 10); do
-		peer_ns="ovpn_peer${p}"
-		ip -n "${peer_ns}" link set tun${p} down 2>/dev/null || true
-		ip netns exec "${peer_ns}" ${OVPN_CLI} del_iface tun${p} \
-			2>/dev/null || true
+	if [[ -n "${pid}" ]]; then
+		kill -TERM "${pid}" 2>/dev/null || true
+		wait "${pid}" 2>/dev/null || true
+		unset "OVPN_LISTENER_PIDS[$peer]"
+	fi
+
+	if [[ -n "${json}" && "${keep_json}" -eq 0 ]]; then
+		rm -f "${json}" || true
+		unset "OVPN_TMP_JSONS[$peer]"
+	fi
+}
+
+ovpn_cleanup_peer_ns() {
+	local peer="$1"
+	local peer_id="${peer#ovpn_peer}"
+
+	ip -n "${peer}" link set tun${peer_id} down 2>/dev/null || true
+	ip netns exec "${peer}" ${OVPN_CLI} del_iface tun${peer_id} \
+		1>/dev/null 2>&1 || true
+	ip netns del "${peer}" 2>/dev/null || true
+}
+
+ovpn_cleanup() {
+	local peer
+
+	# some ovpn-cli processes sleep in background so they need manual poking
+	killall "$(basename "${OVPN_CLI}")" 2>/dev/null || true
+
+	for peer in "${!OVPN_LISTENER_PIDS[@]}"; do
+		ovpn_stop_listener "${peer}" 2>/dev/null
 	done
+
 	for p in $(seq 1 10); do
 		ip -n ovpn_peer0 link del veth${p} 2>/dev/null || true
 	done
-	for p in $(seq 0 10); do
-		ip netns del "ovpn_peer${p}" 2>/dev/null || true
-	done
+
+	# remove from ovpn's netns pool
+	while IFS= read -r peer; do
+		[[ -n "${peer}" ]] || continue
+		ovpn_cleanup_peer_ns "${peer}" 2>/dev/null
+	done < <(ip netns list 2>/dev/null | awk '/^ovpn_/ {print $1}')
 }
 
 if [ "${OVPN_PROTO}" == "UDP" ]; then
diff --git a/tools/testing/selftests/net/ovpn/test-close-socket.sh b/tools/testing/selftests/net/ovpn/test-close-socket.sh
index 6bc1b6eab8ac..af1532b4d2da 100755
--- a/tools/testing/selftests/net/ovpn/test-close-socket.sh
+++ b/tools/testing/selftests/net/ovpn/test-close-socket.sh
@@ -5,43 +5,81 @@
 #  Author:	Antonio Quartulli <antonio@openvpn.net>
 
 #set -x
-set -e
+set -eE
 
 source ./common.sh
-server_ns="ovpn_peer0"
+
+ovpn_test_finished=0
+
+ovpn_test_exit() {
+	ovpn_cleanup
+	modprobe -r ovpn || true
+
+	if [ "${ovpn_test_finished}" -eq 0 ]; then
+		ktap_print_totals
+	fi
+}
+
+ovpn_prepare_network() {
+	local p
+	local peer_ns
+
+	for p in $(seq 0 ${OVPN_NUM_PEERS}); do
+		ovpn_cmd_ok "create namespace peer${p}" ovpn_create_ns "${p}"
+	done
+
+	for p in $(seq 0 ${OVPN_NUM_PEERS}); do
+		ovpn_cmd_ok "configure peer${p} namespace" ovpn_setup_ns \
+			"${p}" 5.5.5.$((p + 1))/24
+	done
+
+	for p in $(seq 0 ${OVPN_NUM_PEERS}); do
+		ovpn_cmd_ok "register peer${p} in overlay" ovpn_add_peer "${p}"
+	done
+
+	for p in $(seq 1 ${OVPN_NUM_PEERS}); do
+		peer_ns="ovpn_peer${p}"
+		ovpn_cmd_ok "set peer0 timeout for peer ${p}" \
+			ip netns exec ovpn_peer0 ${OVPN_CLI} set_peer tun0 \
+				${p} 60 120
+		ovpn_cmd_ok "set peer${p} timeout for peer ${p}" \
+			ip netns exec "${peer_ns}" ${OVPN_CLI} set_peer \
+				tun${p} $((p + OVPN_ID_OFFSET)) 60 120
+	done
+}
+
+ovpn_run_ping_traffic() {
+	local p
+
+	for p in $(seq 1 ${OVPN_NUM_PEERS}); do
+		ovpn_cmd_ok "send ping traffic to peer ${p}" \
+			ip netns exec ovpn_peer0 ping -qfc 500 -w 3 \
+				5.5.5.$((p + 1))
+	done
+}
+
+ovpn_run_iperf() {
+	local iperf_pid
+
+	ovpn_run_bg iperf_pid ip netns exec ovpn_peer0 iperf3 -1 -s
+	sleep 1
+	ovpn_cmd_ok "run iperf throughput flow" \
+		ip netns exec ovpn_peer1 iperf3 -Z -t 3 -c 5.5.5.1
+	wait "${iperf_pid}" || return 1
+}
+
+trap ovpn_test_exit EXIT
+trap ovpn_stage_err ERR
+
+ktap_print_header
+ktap_set_plan 3
 
 ovpn_cleanup
-
 modprobe -q ovpn || true
 
-for p in $(seq 0 ${OVPN_NUM_PEERS}); do
-	ovpn_create_ns ${p}
-done
+ovpn_run_stage "setup network topology" ovpn_prepare_network
+ovpn_run_stage "run ping traffic" ovpn_run_ping_traffic
+ovpn_run_stage "run iperf throughput" ovpn_run_iperf
 
-for p in $(seq 0 ${OVPN_NUM_PEERS}); do
-	ovpn_setup_ns ${p} 5.5.5.$((${p} + 1))/24
-done
-
-for p in $(seq 0 ${OVPN_NUM_PEERS}); do
-	ovpn_add_peer ${p}
-done
-
-for p in $(seq 1 ${OVPN_NUM_PEERS}); do
-	ip netns exec "${server_ns}" ${OVPN_CLI} set_peer tun0 ${p} 60 120
-	ip netns exec "ovpn_peer${p}" ${OVPN_CLI} set_peer tun${p} $((${p}+9)) \
-		60 120
-done
-
-sleep 1
-
-for p in $(seq 1 ${OVPN_NUM_PEERS}); do
-	ip netns exec "${server_ns}" ping -qfc 500 -w 3 5.5.5.$((${p} + 1))
-done
-
-ip netns exec "${server_ns}" iperf3 -1 -s &
-sleep 1
-ip netns exec ovpn_peer1 iperf3 -Z -t 3 -c 5.5.5.1
-
-ovpn_cleanup
-
-modprobe -r ovpn || true
+ovpn_test_finished=1
+ktap_finished
diff --git a/tools/testing/selftests/net/ovpn/test-mark.sh b/tools/testing/selftests/net/ovpn/test-mark.sh
index 2ee5dc5fc538..5a8f47554286 100755
--- a/tools/testing/selftests/net/ovpn/test-mark.sh
+++ b/tools/testing/selftests/net/ovpn/test-mark.sh
@@ -6,92 +6,166 @@
 #		Antonio Quartulli <antonio@openvpn.net>
 
 #set -x
-set -e
+set -eE
 
 MARK=1056
+MARK_DROP_COUNTER=0
 
 source ./common.sh
-server_ns="ovpn_peer0"
+
+ovpn_test_finished=0
+
+ovpn_test_exit() {
+	ovpn_cleanup
+	modprobe -r ovpn || true
+
+	if [ "${ovpn_test_finished}" -eq 0 ]; then
+		ktap_print_totals
+	fi
+}
+
+ovpn_mark_prepare_network() {
+	local p
+	local peer_ns
+
+	for p in $(seq 0 "${OVPN_NUM_PEERS}"); do
+		ovpn_cmd_ok "create namespace peer${p}" ovpn_create_ns "${p}"
+	done
+
+	for p in $(seq 0 3); do
+		ovpn_cmd_ok "configure peer${p} namespace" ovpn_setup_ns \
+			"${p}" 5.5.5.$((p + 1))/24
+	done
+
+	ovpn_cmd_ok "create server-side multi-peer with fwmark" \
+		ip netns exec ovpn_peer0 "${OVPN_CLI}" new_multi_peer tun0 1 \
+			ASYMM "${OVPN_UDP_PEERS_FILE}" "${MARK}"
+	for p in $(seq 1 3); do
+		ovpn_cmd_ok "install server key for peer ${p}" \
+			ip netns exec ovpn_peer0 "${OVPN_CLI}" new_key tun0 \
+				"${p}" 1 0 "${OVPN_ALG}" 0 data64.key
+	done
+
+	for p in $(seq 1 3); do
+		ovpn_cmd_ok "register peer${p} in overlay" ovpn_add_peer "${p}"
+	done
+
+	for p in $(seq 1 3); do
+		peer_ns="ovpn_peer${p}"
+		ovpn_cmd_ok "set peer0 timeout for peer ${p}" \
+			ip netns exec ovpn_peer0 "${OVPN_CLI}" set_peer tun0 \
+				"${p}" 60 120
+		ovpn_cmd_ok "set peer${p} timeout for peer ${p}" \
+			ip netns exec "${peer_ns}" "${OVPN_CLI}" set_peer \
+				tun"${p}" $((p + OVPN_ID_OFFSET)) 60 120
+	done
+}
+
+ovpn_mark_run_baseline_traffic() {
+	local p
+
+	for p in $(seq 1 3); do
+		ovpn_cmd_ok "send baseline traffic to peer ${p}" \
+			ip netns exec ovpn_peer0 ping -qfc 500 -w 3 \
+				5.5.5.$((p + 1))
+	done
+}
+
+ovpn_mark_add_drop_rule() {
+	ovpn_log "Adding an nftables drop rule based on mark value ${MARK}"
+
+	ovpn_cmd_ok "flush nft ruleset" ip netns exec ovpn_peer0 nft flush \
+		ruleset
+	ovpn_cmd_ok "create nft filter table" ip netns exec ovpn_peer0 nft \
+		"add table inet filter"
+	ovpn_cmd_ok "create nft filter output chain" \
+		ip netns exec ovpn_peer0 nft "add chain inet filter output { \
+			type filter hook output priority 0; policy accept; }"
+	ovpn_cmd_ok "add nft drop rule for mark ${MARK}" \
+		ip netns exec ovpn_peer0 nft add rule inet filter output \
+			meta mark == "${MARK}" \
+			counter drop
+
+	MARK_DROP_COUNTER=$(ip netns exec ovpn_peer0 nft list chain inet \
+		filter output | sed -n 's/.*packets \([0-9]*\).*/\1/p')
+	if [ -z "${MARK_DROP_COUNTER}" ]; then
+		printf '%s\n' "unable to read nft drop counter"
+		return 1
+	fi
+}
+
+ovpn_mark_verify_drop_traffic() {
+	local p
+	local ping_output
+	local lost_packets
+	local total_count
+
+	for p in $(seq 1 3); do
+		if ping_output=$(ip netns exec ovpn_peer0 ping -qfc 500 -w 1 \
+			5.5.5.$((p + 1)) 2>&1); then
+			printf '%s\n' "expected ping to peer ${p} to fail \
+				after nft drop rule"
+			return 1
+		fi
+		ovpn_log "${ping_output}"
+		lost_packets=$(echo "${ping_output}" | \
+				awk '/packets transmitted/ { print $1 }')
+		if [ -z "${lost_packets}" ]; then
+			printf '%s\n' "unable to parse lost packets for peer \
+				${p}"
+			return 1
+		fi
+		MARK_DROP_COUNTER=$((MARK_DROP_COUNTER + lost_packets))
+	done
+
+	total_count=$(ip netns exec ovpn_peer0 nft list chain inet filter \
+		output | sed -n 's/.*packets \([0-9]*\).*/\1/p')
+	if [ -z "${total_count}" ]; then
+		printf '%s\n' "unable to read final nft drop counter"
+		return 1
+	fi
+	if [ "${MARK_DROP_COUNTER}" -ne "${total_count}" ]; then
+		printf '%s\n' "expected ${MARK_DROP_COUNTER} drops, got \
+			${total_count}"
+		return 1
+	fi
+}
+
+ovpn_mark_remove_drop_rule() {
+	ovpn_log "Removing the drop rule"
+
+	ovpn_cmd_ok "flush nft ruleset" ip netns exec ovpn_peer0 nft flush \
+		ruleset
+}
+
+ovpn_mark_verify_traffic_recovery() {
+	local p
+
+	sleep 1
+	for p in $(seq 1 3); do
+		ovpn_cmd_ok "send recovery traffic to peer ${p}" \
+			ip netns exec ovpn_peer0 ping -qfc 500 -w 3 \
+				5.5.5.$((p + 1))
+	done
+}
+
+trap ovpn_test_exit EXIT
+trap ovpn_stage_err ERR
+
+ktap_print_header
+ktap_set_plan 6
 
 ovpn_cleanup
-
 modprobe -q ovpn || true
 
-for p in $(seq 0 "${OVPN_NUM_PEERS}"); do
-	ovpn_create_ns "${p}"
-done
+ovpn_run_stage "setup marked network topology" ovpn_mark_prepare_network
+ovpn_run_stage "run baseline traffic" ovpn_mark_run_baseline_traffic
+ovpn_run_stage "install nft mark drop rule" ovpn_mark_add_drop_rule
+ovpn_run_stage "drop marked traffic and count packets" \
+	ovpn_mark_verify_drop_traffic
+ovpn_run_stage "remove nft drop rule" ovpn_mark_remove_drop_rule
+ovpn_run_stage "traffic recovers after drop removal" \
+	ovpn_mark_verify_traffic_recovery
 
-for p in $(seq 0 3); do
-	ovpn_setup_ns "${p}" 5.5.5.$((p + 1))/24
-done
-
-# add peer0 with mark
-ip netns exec "${server_ns}" "${OVPN_CLI}" new_multi_peer tun0 1 ASYMM \
-	"${OVPN_UDP_PEERS_FILE}" \
-	${MARK}
-for p in $(seq 1 3); do
-	ip netns exec "${server_ns}" "${OVPN_CLI}" new_key tun0 "${p}" 1 0 \
-		"${OVPN_ALG}" 0 data64.key
-done
-
-for p in $(seq 1 3); do
-	ovpn_add_peer "${p}"
-done
-
-for p in $(seq 1 3); do
-	ip netns exec "${server_ns}" "${OVPN_CLI}" set_peer tun0 "${p}" 60 120
-	ip netns exec "ovpn_peer${p}" "${OVPN_CLI}" set_peer tun"${p}" \
-		$((p + 9)) 60 120
-done
-
-sleep 1
-
-for p in $(seq 1 3); do
-	ip netns exec "${server_ns}" ping -qfc 500 -w 3 5.5.5.$((p + 1))
-done
-
-echo "Adding an nftables drop rule based on mark value ${MARK}"
-ip netns exec "${server_ns}" nft flush ruleset
-ip netns exec "${server_ns}" nft 'add table inet filter'
-ip netns exec "${server_ns}" nft 'add chain inet filter output {
-	type filter hook output priority 0;
-	policy accept;
-}'
-ip netns exec "${server_ns}" nft add rule inet filter output \
-	meta mark == ${MARK} \
-	counter drop
-
-DROP_COUNTER=$(ip netns exec "${server_ns}" nft list chain inet filter output \
-	| sed -n 's/.*packets \([0-9]*\).*/\1/p')
-sleep 1
-
-# ping should fail
-for p in $(seq 1 3); do
-	PING_OUTPUT=$(ip netns exec "${server_ns}" ping \
-		-qfc 500 -w 1 5.5.5.$((p + 1)) 2>&1) && exit 1
-	echo "${PING_OUTPUT}"
-	LOST_PACKETS=$(echo "$PING_OUTPUT" \
-		| awk '/packets transmitted/ { print $1 }')
-	# increment the drop counter by the amount of lost packets
-	DROP_COUNTER=$((DROP_COUNTER + LOST_PACKETS))
-done
-
-# check if the final nft counter matches our counter
-TOTAL_COUNT=$(ip netns exec "${server_ns}" nft list chain inet filter output \
-	| sed -n 's/.*packets \([0-9]*\).*/\1/p')
-if [ "${DROP_COUNTER}" -ne "${TOTAL_COUNT}" ]; then
-	echo "Expected ${TOTAL_COUNT} drops, got ${DROP_COUNTER}"
-	exit 1
-fi
-
-echo "Removing the drop rule"
-ip netns exec "${server_ns}" nft flush ruleset
-sleep 1
-
-for p in $(seq 1 3); do
-	ip netns exec "${server_ns}" ping -qfc 500 -w 3 5.5.5.$((p + 1))
-done
-
-ovpn_cleanup
-
-modprobe -r ovpn || true
+ovpn_test_finished=1
+ktap_finished
diff --git a/tools/testing/selftests/net/ovpn/test.sh b/tools/testing/selftests/net/ovpn/test.sh
index b766f4842940..eca653112aeb 100755
--- a/tools/testing/selftests/net/ovpn/test.sh
+++ b/tools/testing/selftests/net/ovpn/test.sh
@@ -5,164 +5,313 @@
 #  Author:	Antonio Quartulli <antonio@openvpn.net>
 
 #set -x
-set -e
+set -eE
 
 source ./common.sh
-server_ns="ovpn_peer0"
 
-ovpn_cleanup
+ovpn_test_finished=0
 
-modprobe -q ovpn || true
+ovpn_test_exit() {
+	ovpn_cleanup
+	modprobe -r ovpn || true
 
-for p in $(seq 0 ${OVPN_NUM_PEERS}); do
-	ovpn_create_ns ${p}
-done
+	if [ "${ovpn_test_finished}" -eq 0 ]; then
+		ktap_print_totals
+	fi
+}
 
-for p in $(seq 0 ${OVPN_NUM_PEERS}); do
-	ovpn_setup_listener ${p}
-done
+ovpn_prepare_network() {
+	local p
+	local peer_ns
 
-for p in $(seq 0 ${OVPN_NUM_PEERS}); do
-	ovpn_setup_ns ${p} 5.5.5.$((${p} + 1))/24 ${MTU}
-done
+	for p in $(seq 0 ${OVPN_NUM_PEERS}); do
+		ovpn_cmd_ok "create namespace peer${p}" ovpn_create_ns "${p}"
+	done
 
-for p in $(seq 0 ${OVPN_NUM_PEERS}); do
-	ovpn_add_peer ${p}
-done
+	for p in $(seq 0 ${OVPN_NUM_PEERS}); do
+		ovpn_cmd_ok "start notification listener peer${p}" \
+			ovpn_setup_listener "${p}"
+	done
 
-for p in $(seq 1 ${OVPN_NUM_PEERS}); do
-	ip netns exec "${server_ns}" ${OVPN_CLI} set_peer tun0 ${p} 60 120
-	ip netns exec "ovpn_peer${p}" ${OVPN_CLI} set_peer tun${p} \
-		$((${p}+OVPN_ID_OFFSET)) 60 120
-done
+	for p in $(seq 0 ${OVPN_NUM_PEERS}); do
+		ovpn_cmd_ok "configure peer${p} namespace" ovpn_setup_ns \
+			"${p}" 5.5.5.$((p + 1))/24 "${MTU}"
+	done
 
-sleep 1
+	for p in $(seq 0 ${OVPN_NUM_PEERS}); do
+		ovpn_cmd_ok "register peer${p} in overlay" ovpn_add_peer "${p}"
+	done
 
-TCPDUMP_TIMEOUT="1.5s"
-for p in $(seq 1 ${OVPN_NUM_PEERS}); do
-	# The first part of the data packet header consists of:
-	# - TCP only: 2 bytes for the packet length
-	# - 5 bits for opcode ("9" for DATA_V2)
-	# - 3 bits for key-id ("0" at this point)
-	# - 12 bytes for peer-id:
-	#     - with asymmetric ID: "${p}" one way and "${p} + 9" the other way
-	#     - with symmetric ID: "${p}" both ways
-	HEADER1=$(printf "0x4800000%x" ${p})
-	HEADER2=$(printf "0x4800000%x" $((${p} + OVPN_ID_OFFSET)))
-	RADDR=""
-	if [ "${OVPN_PROTO}" == "UDP" ]; then
-		RADDR=$(awk "NR == ${p} {print \$3}" ${OVPN_UDP_PEERS_FILE})
+	for p in $(seq 1 ${OVPN_NUM_PEERS}); do
+		peer_ns="ovpn_peer${p}"
+		ovpn_cmd_ok "set peer0 timeout for peer ${p}" \
+			ip netns exec ovpn_peer0 ${OVPN_CLI} set_peer tun0 \
+				${p} 60 120
+		ovpn_cmd_ok "set peer${p} timeout for peer ${p}" \
+			ip netns exec "${peer_ns}" ${OVPN_CLI} set_peer \
+				tun${p} $((p + OVPN_ID_OFFSET)) 60 120
+	done
+}
+
+ovpn_run_basic_traffic() {
+	local p
+	local header1
+	local header2
+	local peer_ns
+	local raddr
+	local tcpdump_pid1
+	local tcpdump_pid2
+	local tcpdump_timeout="1.5s"
+
+	for p in $(seq 1 ${OVPN_NUM_PEERS}); do
+		# The first part of the data packet header consists of:
+		# - TCP only: 2 bytes for the packet length
+		# - 5 bits for opcode ("9" for DATA_V2)
+		# - 3 bits for key-id ("0" at this point)
+		# - 12 bytes for peer-id:
+		#     - with asymmetric ID: "${p}" one way and "${p} + 9" the
+		#	other way
+		#     - with symmetric ID: "${p}" both ways
+		header1=$(printf "0x4800000%x" ${p})
+		header2=$(printf "0x4800000%x" $((p + OVPN_ID_OFFSET)))
+		raddr=""
+		if [ "${OVPN_PROTO}" == "UDP" ]; then
+			raddr=$(awk "NR == ${p} {print \$3}" \
+				"${OVPN_UDP_PEERS_FILE}")
+		fi
+		peer_ns="ovpn_peer${p}"
+
+		timeout ${tcpdump_timeout} ip netns exec "${peer_ns}" \
+			tcpdump --immediate-mode -p -ni veth${p} -c 1 \
+			"$(ovpn_build_capture_filter "${header1}" "${raddr}")" \
+			>/dev/null 2>&1 &
+		tcpdump_pid1=$!
+		timeout ${tcpdump_timeout} ip netns exec "${peer_ns}" \
+			tcpdump --immediate-mode -p -ni veth${p} -c 1 \
+			"$(ovpn_build_capture_filter "${header2}" "${raddr}")" \
+			>/dev/null 2>&1 &
+		tcpdump_pid2=$!
+
+		sleep 0.3
+		ovpn_cmd_ok "send baseline traffic to peer ${p}" \
+			ip netns exec ovpn_peer0 \
+			ping -qfc 500 -w 3 5.5.5.$((p + 1))
+		ovpn_cmd_ok "send large-payload traffic to peer ${p}" \
+			ip netns exec ovpn_peer0 \
+			ping -qfc 500 -s 3000 -w 3 5.5.5.$((p + 1))
+
+		wait "${tcpdump_pid1}" || return 1
+		wait "${tcpdump_pid2}" || return 1
+	done
+}
+
+ovpn_run_lan_traffic() {
+	ovpn_cmd_ok "ping LAN behind peer1" \
+		ip netns exec ovpn_peer0 ping -qfc 500 -w 3 "${OVPN_LAN_IP}"
+}
+
+ovpn_run_float_mode() {
+	local p
+	local peer_ns
+
+	for p in $(seq 1 ${OVPN_NUM_PEERS}); do
+		peer_ns="ovpn_peer${p}"
+		ovpn_cmd_ok "float: remove old transport address on peer${p}" \
+			ip -n "${peer_ns}" addr del 10.10.${p}.2/24 dev veth${p}
+		ovpn_cmd_ok "float: add new transport address on peer${p}" \
+			ip -n "${peer_ns}" addr add 10.10.${p}.3/24 dev veth${p}
+	done
+	for p in $(seq 1 ${OVPN_NUM_PEERS}); do
+		peer_ns="ovpn_peer${p}"
+		ovpn_cmd_ok "ping tunnel after float peer ${p}" \
+			ip netns exec "${peer_ns}" ping -qfc 500 -w 3 5.5.5.1
+	done
+}
+
+ovpn_run_iperf() {
+	local iperf_pid
+
+	ovpn_run_bg iperf_pid ip netns exec ovpn_peer0 iperf3 -1 -s
+	sleep 1
+
+	ovpn_cmd_ok "run iperf throughput flow" \
+		ip netns exec ovpn_peer1 iperf3 -Z -t 3 -c 5.5.5.1
+	wait "${iperf_pid}" || return 1
+}
+
+ovpn_run_key_rollover() {
+	local p
+	local peer_ns
+
+	ovpn_log "Adding secondary key and then swap:"
+
+	for p in $(seq 1 ${OVPN_NUM_PEERS}); do
+		peer_ns="ovpn_peer${p}"
+		ovpn_cmd_ok "add secondary key on peer0 for peer ${p}" \
+			ip netns exec ovpn_peer0 ${OVPN_CLI} new_key tun0 \
+				${p} 2 1 ${OVPN_ALG} 0 data64.key
+		ovpn_cmd_ok "add secondary key on peer${p} for peer ${p}" \
+			ip netns exec "${peer_ns}" ${OVPN_CLI} new_key tun${p} \
+				$((p + OVPN_ID_OFFSET)) 2 1 ${OVPN_ALG} 1 \
+				data64.key
+		ovpn_cmd_ok "swap keys on peer${p}" \
+			ip netns exec "${peer_ns}" ${OVPN_CLI} swap_keys \
+				tun${p} $((p + OVPN_ID_OFFSET))
+	done
+}
+
+ovpn_run_queries() {
+	ovpn_log "Querying all peers:"
+
+	ovpn_cmd_ok "query all peers from peer0" \
+		ip netns exec ovpn_peer0 ${OVPN_CLI} get_peer tun0
+	ovpn_cmd_ok "query all peers from peer1" \
+		ip netns exec ovpn_peer1 ${OVPN_CLI} get_peer tun1
+
+	ovpn_log "Querying peer 1:"
+
+	ovpn_cmd_ok "query peer 1 from peer0" \
+		ip netns exec ovpn_peer0 ${OVPN_CLI} get_peer tun0 1
+}
+
+ovpn_query_peer_missing() {
+	ovpn_log "Querying non-existent peer 20:"
+
+	ovpn_cmd_fail "query missing peer 20 on peer0" \
+		ip netns exec ovpn_peer0 ${OVPN_CLI} get_peer tun0 20
+}
+
+ovpn_run_peer_cleanup() {
+	local p
+	local peer_ns
+
+	ovpn_log "Deleting peer 1:"
+
+	ovpn_cmd_ok "delete peer1 on peer0" \
+		ip netns exec ovpn_peer0 ${OVPN_CLI} del_peer tun0 1
+	ovpn_cmd_ok "delete peer1 on peer1" \
+		ip netns exec ovpn_peer1 ${OVPN_CLI} del_peer tun1 \
+			$((1 + OVPN_ID_OFFSET))
+
+	ovpn_log "Querying keys:"
+
+	for p in $(seq 2 ${OVPN_NUM_PEERS}); do
+		peer_ns="ovpn_peer${p}"
+		ovpn_cmd_ok "query peer${p} key 1" \
+			ip netns exec "${peer_ns}" ${OVPN_CLI} get_key tun${p} \
+				$((p + OVPN_ID_OFFSET)) 1
+		ovpn_cmd_ok "query peer${p} key 2" \
+			ip netns exec "${peer_ns}" ${OVPN_CLI} get_key tun${p} \
+				$((p + OVPN_ID_OFFSET)) 2
+	done
+}
+
+ovpn_run_traffic_delete_peer() {
+	local ping_pid
+
+	ovpn_log "Deleting peer while sending traffic:"
+
+	ovpn_run_bg ping_pid ip netns exec ovpn_peer2 ping -qf -w 4 5.5.5.1
+	sleep 2
+	ovpn_cmd_ok "delete peer0 peer 2" \
+		ip netns exec ovpn_peer0 ${OVPN_CLI} del_peer tun0 2
+
+	if [ "${OVPN_PROTO}" == "TCP" ]; then
+		# In TCP mode this command is expected to fail for both peers.
+		ovpn_cmd_mayfail "delete peer2 peer 2 (TCP non-fatal)" \
+			ip netns exec ovpn_peer2 ${OVPN_CLI} del_peer tun2 \
+				$((2 + OVPN_ID_OFFSET))
+	else
+		ovpn_cmd_ok "delete peer2 peer 2" ip netns exec ovpn_peer2 \
+			${OVPN_CLI} del_peer tun2 $((2 + OVPN_ID_OFFSET))
 	fi
 
-	timeout ${TCPDUMP_TIMEOUT} ip netns exec "ovpn_peer${p}" \
-		tcpdump --immediate-mode -p -ni veth${p} -c 1 \
-		"$(ovpn_build_capture_filter "${HEADER1}" "${RADDR}")" \
-		>/dev/null 2>&1 &
-	TCPDUMP_PID1=$!
-	timeout ${TCPDUMP_TIMEOUT} ip netns exec "ovpn_peer${p}" \
-		tcpdump --immediate-mode -p -ni veth${p} -c 1 \
-		"$(ovpn_build_capture_filter "${HEADER2}" "${RADDR}")" \
-		>/dev/null 2>&1 &
-	TCPDUMP_PID2=$!
+	wait "${ping_pid}" || true
+}
 
-	sleep 0.3
-	ip netns exec "${server_ns}" ping -qfc 500 -w 3 5.5.5.$((${p} + 1))
-	ip netns exec "${server_ns}" ping -qfc 500 -s 3000 -w 3 \
-		5.5.5.$((${p} + 1))
+ovpn_run_key_cleanup() {
+	local p
+	local peer_ns
 
-	wait ${TCPDUMP_PID1}
-	wait ${TCPDUMP_PID2}
-done
+	ovpn_log "Deleting keys:"
 
-# ping LAN behind client 1
-ip netns exec "${server_ns}" ping -qfc 500 -w 3 ${OVPN_LAN_IP}
-
-if [ "$OVPN_FLOAT" == "1" ]; then
-	# make clients float..
-	for p in $(seq 1 ${OVPN_NUM_PEERS}); do
-		ip -n "ovpn_peer${p}" addr del 10.10.${p}.2/24 dev veth${p}
-		ip -n "ovpn_peer${p}" addr add 10.10.${p}.3/24 dev veth${p}
+	for p in $(seq 3 ${OVPN_NUM_PEERS}); do
+		peer_ns="ovpn_peer${p}"
+		ovpn_cmd_ok "delete key 1 for peer${p}" \
+			ip netns exec "${peer_ns}" ${OVPN_CLI} del_key tun${p} \
+				$((p + OVPN_ID_OFFSET)) 1
+		ovpn_cmd_ok "delete key 2 for peer${p}" \
+			ip netns exec "${peer_ns}" ${OVPN_CLI} del_key tun${p} \
+				$((p + OVPN_ID_OFFSET)) 2
 	done
-	for p in $(seq 1 ${OVPN_NUM_PEERS}); do
-		ip netns exec "ovpn_peer${p}" ping -qfc 500 -w 3 5.5.5.1
+}
+
+ovpn_run_timeouts() {
+	local p
+	local peer_ns
+
+	ovpn_log "Setting timeout to 3s MP:"
+
+	for p in $(seq 3 ${OVPN_NUM_PEERS}); do
+		# Non-fatal: this may fail in some protocol modes.
+		ovpn_cmd_mayfail "set peer0 timeout for peer ${p} (non-fatal)" \
+			ip netns exec ovpn_peer0 ${OVPN_CLI} set_peer tun0 \
+				${p} 3 3
+		peer_ns="ovpn_peer${p}"
+		ovpn_cmd_ok "disable timeout on peer${p} while peer0 adjusts \
+			state" ip netns exec "${peer_ns}" ${OVPN_CLI} set_peer \
+			tun${p} $((p + OVPN_ID_OFFSET)) 0 0
 	done
+	# wait for peers to timeout
+	sleep 5
+
+	ovpn_log "Setting timeout to 3s P2P:"
+
+	for p in $(seq 3 ${OVPN_NUM_PEERS}); do
+		peer_ns="ovpn_peer${p}"
+		ovpn_cmd_ok "set peer${p} P2P timeout" \
+			ip netns exec "${peer_ns}" ${OVPN_CLI} set_peer \
+				tun${p} $((p + OVPN_ID_OFFSET)) 3 3
+	done
+	sleep 5
+}
+
+ovpn_run_notifications() {
+	local p
+
+	for p in $(seq 0 ${OVPN_NUM_PEERS}); do
+		ovpn_cmd_ok "validate listener output for peer ${p}" \
+			ovpn_compare_ntfs "${p}"
+	done
+}
+
+trap ovpn_test_exit EXIT
+trap ovpn_stage_err ERR
+
+ktap_print_header
+if [ "${OVPN_FLOAT}" == "1" ]; then
+	ktap_set_plan 13
+else
+	ktap_set_plan 12
 fi
 
-ip netns exec "${server_ns}" iperf3 -1 -s &
-sleep 1
-ip netns exec ovpn_peer1 iperf3 -Z -t 3 -c 5.5.5.1
-
-echo "Adding secondary key and then swap:"
-for p in $(seq 1 ${OVPN_NUM_PEERS}); do
-	ip netns exec "${server_ns}" ${OVPN_CLI} new_key tun0 ${p} 2 1 \
-		${OVPN_ALG} 0 data64.key
-	ip netns exec "ovpn_peer${p}" ${OVPN_CLI} new_key tun${p} \
-		$((${p} + OVPN_ID_OFFSET)) 2 1 ${OVPN_ALG} 1 data64.key
-	ip netns exec "ovpn_peer${p}" ${OVPN_CLI} swap_keys tun${p} \
-		$((${p} + OVPN_ID_OFFSET))
-done
-
-sleep 1
-
-echo "Querying all peers:"
-ip netns exec "${server_ns}" ${OVPN_CLI} get_peer tun0
-ip netns exec ovpn_peer1 ${OVPN_CLI} get_peer tun1
-
-echo "Querying peer 1:"
-ip netns exec "${server_ns}" ${OVPN_CLI} get_peer tun0 1
-
-echo "Querying non-existent peer 20:"
-ip netns exec "${server_ns}" ${OVPN_CLI} get_peer tun0 20 || true
-
-echo "Deleting peer 1:"
-ip netns exec "${server_ns}" ${OVPN_CLI} del_peer tun0 1
-ip netns exec ovpn_peer1 ${OVPN_CLI} del_peer tun1 $((1 + OVPN_ID_OFFSET))
-
-echo "Querying keys:"
-for p in $(seq 2 ${OVPN_NUM_PEERS}); do
-	ip netns exec "ovpn_peer${p}" ${OVPN_CLI} get_key tun${p} \
-		$((${p} + OVPN_ID_OFFSET)) 1
-	ip netns exec "ovpn_peer${p}" ${OVPN_CLI} get_key tun${p} \
-		$((${p} + OVPN_ID_OFFSET)) 2
-done
-
-echo "Deleting peer while sending traffic:"
-(ip netns exec ovpn_peer2 ping -qf -w 4 5.5.5.1)&
-sleep 2
-ip netns exec "${server_ns}" ${OVPN_CLI} del_peer tun0 2
-# following command fails in TCP mode
-# (both ends get conn reset when one peer disconnects)
-ip netns exec ovpn_peer2 ${OVPN_CLI} del_peer tun2 $((2 + OVPN_ID_OFFSET)) || \
-	true
-
-echo "Deleting keys:"
-for p in $(seq 3 ${OVPN_NUM_PEERS}); do
-	ip netns exec "ovpn_peer${p}" ${OVPN_CLI} del_key tun${p} \
-		$((${p} + OVPN_ID_OFFSET)) 1
-	ip netns exec "ovpn_peer${p}" ${OVPN_CLI} del_key tun${p} \
-		$((${p} + OVPN_ID_OFFSET)) 2
-done
-
-echo "Setting timeout to 3s MP:"
-for p in $(seq 3 ${OVPN_NUM_PEERS}); do
-	ip netns exec "${server_ns}" ${OVPN_CLI} set_peer tun0 ${p} 3 3 || true
-	ip netns exec "ovpn_peer${p}" ${OVPN_CLI} set_peer tun${p} \
-		$((${p} + OVPN_ID_OFFSET)) 0 0
-done
-# wait for peers to timeout
-sleep 5
-
-echo "Setting timeout to 3s P2P:"
-for p in $(seq 3 ${OVPN_NUM_PEERS}); do
-	ip netns exec "ovpn_peer${p}" ${OVPN_CLI} set_peer tun${p} \
-		$((${p} + OVPN_ID_OFFSET)) 3 3
-done
-sleep 5
-
-for p in $(seq 0 ${OVPN_NUM_PEERS}); do
-	ovpn_compare_ntfs ${p}
-done
-
 ovpn_cleanup
+modprobe -q ovpn || true
 
-modprobe -r ovpn || true
+ovpn_run_stage "setup network topology" ovpn_prepare_network
+ovpn_run_stage "run baseline data traffic" ovpn_run_basic_traffic
+ovpn_run_stage "run LAN traffic behind peer1" ovpn_run_lan_traffic
+[ "${OVPN_FLOAT}" == "1" ] && ovpn_run_stage "run floating peer checks" \
+	ovpn_run_float_mode
+ovpn_run_stage "run iperf throughput" ovpn_run_iperf
+ovpn_run_stage "run key rollout" ovpn_run_key_rollover
+ovpn_run_stage "query peers" ovpn_run_queries
+ovpn_run_stage "query missing peer fails" ovpn_query_peer_missing
+ovpn_run_stage "peer lifecycle and key queries" ovpn_run_peer_cleanup
+ovpn_run_stage "delete peer while traffic" ovpn_run_traffic_delete_peer
+ovpn_run_stage "delete stale keys" ovpn_run_key_cleanup
+ovpn_run_stage "check timeout behavior" ovpn_run_timeouts
+ovpn_run_stage "validate notification output" ovpn_run_notifications
+
+ovpn_test_finished=1
+ktap_finished

From 6c9b1dc218fea8b15893953f5299b209f11fa0a8 Mon Sep 17 00:00:00 2001
From: Ralf Lici <ralf@mandelbit.com>
Date: Thu, 16 Apr 2026 09:19:28 +0200
Subject: [PATCH 6/6] selftests: ovpn: serialize YNL listener startup

Starting one background YNL notification listener per peer back-to-back
can intermittently stall the test setup before the listeners even reach
the Python main function.

This was reproducible in a reduced test.sh setup-only loop: a single
listener stayed stable across repeated runs, while starting listeners
for all peers could hang early in the listener launch phase. Adding a
short delay between listener launches makes the listeners start cleanly
and eliminates the reproduced hangs in repeated normal and slow-runner
tests.

Serialize listener startup with a small sleep between setup_listener
calls.

Fixes: 77de28cd7cf1 ("selftests: ovpn: add notification parsing and matching")
Signed-off-by: Ralf Lici <ralf@mandelbit.com>
Signed-off-by: Antonio Quartulli <antonio@openvpn.net>
---
 tools/testing/selftests/net/ovpn/test.sh | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/tools/testing/selftests/net/ovpn/test.sh b/tools/testing/selftests/net/ovpn/test.sh
index eca653112aeb..b50dbe45a4d0 100755
--- a/tools/testing/selftests/net/ovpn/test.sh
+++ b/tools/testing/selftests/net/ovpn/test.sh
@@ -31,6 +31,9 @@ ovpn_prepare_network() {
 	for p in $(seq 0 ${OVPN_NUM_PEERS}); do
 		ovpn_cmd_ok "start notification listener peer${p}" \
 			ovpn_setup_listener "${p}"
+		# starting all YNL listeners back-to-back can intermittently
+		# stall their startup so serialize launches a bit
+		sleep 0.5
 	done
 
 	for p in $(seq 0 ${OVPN_NUM_PEERS}); do