Subject: [PATCH net-next 23/38] selftests/net: use unique netns name for setup_loopback.sh setup_veth.sh

From: Hangbin Liu <[email-masked]>
Date: Fri, 24 Nov 2023 17:27:21 +0800

rename server_ns/client_ns to unique name so we can run the tests in
parallel.

Signed-off-by: Hangbin Liu <[email-masked]>
---
 tools/testing/selftests/net/setup_loopback.sh | 8 +++++---
 tools/testing/selftests/net/setup_veth.sh     | 9 ++++++---
 2 files changed, 11 insertions(+), 6 deletions(-)

diff --git a/tools/testing/selftests/net/setup_loopback.sh b/tools/testing/selftests/net/setup_loopback.sh
index e57bbfbc5208..6b1150bf3995 100755
--- a/tools/testing/selftests/net/setup_loopback.sh
+++ b/tools/testing/selftests/net/setup_loopback.sh
@@ -5,6 +5,8 @@ readonly FLUSH_PATH="/sys/class/net/${dev}/gro_flush_timeout"
 readonly IRQ_PATH="/sys/class/net/${dev}/napi_defer_hard_irqs"
 readonly FLUSH_TIMEOUT="$(< ${FLUSH_PATH})"
 readonly HARD_IRQS="$(< ${IRQ_PATH})"
+readonly server_ns=$(mktemp -u server-XXXXXXXX)
+readonly client_ns=$(mktemp -u client-XXXXXXXX)
 
 netdev_check_for_carrier() {
 	local -r dev="$1"
@@ -97,12 +99,12 @@ setup_interrupt() {
 
 setup_ns() {
 	# Set up server_ns namespace and client_ns namespace
-	setup_macvlan_ns "${dev}" server_ns server "${SERVER_MAC}"
-	setup_macvlan_ns "${dev}" client_ns client "${CLIENT_MAC}"
+	setup_macvlan_ns "${dev}" ${server_ns} server "${SERVER_MAC}"
+	setup_macvlan_ns "${dev}" ${client_ns} client "${CLIENT_MAC}"
 }
 
 cleanup_ns() {
-	cleanup_macvlan_ns server_ns server client_ns client
+	cleanup_macvlan_ns ${server} server ${client_ns} client
 }
 
 setup() {
diff --git a/tools/testing/selftests/net/setup_veth.sh b/tools/testing/selftests/net/setup_veth.sh
index 1003ddf7b3b2..a9a1759e035c 100644
--- a/tools/testing/selftests/net/setup_veth.sh
+++ b/tools/testing/selftests/net/setup_veth.sh
@@ -1,6 +1,9 @@
 #!/bin/bash
 # SPDX-License-Identifier: GPL-2.0
 
+readonly server_ns=$(mktemp -u server-XXXXXXXX)
+readonly client_ns=$(mktemp -u client-XXXXXXXX)
+
 setup_veth_ns() {
 	local -r link_dev="$1"
 	local -r ns_name="$2"
@@ -19,14 +22,14 @@ setup_ns() {
 	# Set up server_ns namespace and client_ns namespace
 	ip link add name server type veth peer name client
 
-	setup_veth_ns "${dev}" server_ns server "${SERVER_MAC}"
-	setup_veth_ns "${dev}" client_ns client "${CLIENT_MAC}"
+	setup_veth_ns "${dev}" ${server_ns} server "${SERVER_MAC}"
+	setup_veth_ns "${dev}" ${client_ns} client "${CLIENT_MAC}"
 }
 
 cleanup_ns() {
 	local ns_name
 
-	for ns_name in client_ns server_ns; do
+	for ns_name in ${client_ns} ${server_ns}; do
 		[[ -e /var/run/netns/"${ns_name}" ]] && ip netns del "${ns_name}"
 	done
 }
-- 
2.41.0