netdev - [PATCH net-next v2 1/2] selftest: netcons: refactor target creation

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Message-Id: <20250904-netconsole_torture-v2-1-5775ed5dc366@debian.org>
Date: Thu, 04 Sep 2025 11:00:40 -0700
From: Breno Leitao <leitao@...ian.org>
To: Andrew Lunn <andrew+netdev@...n.ch>, 
 "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, 
 Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, 
 Shuah Khan <shuah@...nel.org>
Cc: linux-kernel@...r.kernel.org, netdev@...r.kernel.org, 
 linux-kselftest@...r.kernel.org, asantostc@...il.com, efault@....de, 
 calvin@...nvd.org, kernel-team@...a.com, Breno Leitao <leitao@...ian.org>
Subject: [PATCH net-next v2 1/2] selftest: netcons: refactor target
 creation

Extract the netconsole target creation from create_dynamic_target(), by
moving it from create_dynamic_target() into a new helper function. This
enables other tests to use the creation of netconsole targets with
arbitrary parameters and no sleep.

The new helper will be utilized by forthcoming torture-type selftests
that require dynamic target management.

Signed-off-by: Breno Leitao <leitao@...ian.org>
---
 .../selftests/drivers/net/lib/sh/lib_netcons.sh    | 30 ++++++++++++++--------
 1 file changed, 19 insertions(+), 11 deletions(-)

diff --git a/tools/testing/selftests/drivers/net/lib/sh/lib_netcons.sh b/tools/testing/selftests/drivers/net/lib/sh/lib_netcons.sh
index 8e1085e896472..9b5ef8074440c 100644
--- a/tools/testing/selftests/drivers/net/lib/sh/lib_netcons.sh
+++ b/tools/testing/selftests/drivers/net/lib/sh/lib_netcons.sh
@@ -113,31 +113,39 @@ function set_network() {
 	configure_ip
 }

-function create_dynamic_target() {
-	local FORMAT=${1:-"extended"}
+function _create_dynamic_target() {
+	local FORMAT="${1:?FORMAT parameter required}"
+	local NCPATH="${2:?NCPATH parameter required}"

 	DSTMAC=$(ip netns exec "${NAMESPACE}" \
 		 ip link show "${DSTIF}" | awk '/ether/ {print $2}')

 	# Create a dynamic target
-	mkdir "${NETCONS_PATH}"
+	mkdir "${NCPATH}"

-	echo "${DSTIP}" > "${NETCONS_PATH}"/remote_ip
-	echo "${SRCIP}" > "${NETCONS_PATH}"/local_ip
-	echo "${DSTMAC}" > "${NETCONS_PATH}"/remote_mac
-	echo "${SRCIF}" > "${NETCONS_PATH}"/dev_name
+	echo "${DSTIP}" > "${NCPATH}"/remote_ip
+	echo "${SRCIP}" > "${NCPATH}"/local_ip
+	echo "${DSTMAC}" > "${NCPATH}"/remote_mac
+	echo "${SRCIF}" > "${NCPATH}"/dev_name

 	if [ "${FORMAT}" == "basic" ]
 	then
 		# Basic target does not support release
-		echo 0 > "${NETCONS_PATH}"/release
-		echo 0 > "${NETCONS_PATH}"/extended
+		echo 0 > "${NCPATH}"/release
+		echo 0 > "${NCPATH}"/extended
 	elif [ "${FORMAT}" == "extended" ]
 	then
-		echo 1 > "${NETCONS_PATH}"/extended
+		echo 1 > "${NCPATH}"/extended
 	fi

-	echo 1 > "${NETCONS_PATH}"/enabled
+	echo 1 > "${NCPATH}"/enabled
+
+}
+
+function create_dynamic_target() {
+	local FORMAT=${1:-"extended"}
+	local NCPATH=${2:-"$NETCONS_PATH"}
+	_create_dynamic_target "${FORMAT}" "${NCPATH}"

 	# This will make sure that the kernel was able to
 	# load the netconsole driver configuration. The console message

-- 
2.47.3