test: hsr: Move common code to hsr_common.sh file

Some of the code already present in the hsr_ping.sh test program can be
moved to a separate script file, so it can be reused by other HSR
functionality (like HSR-SAN) tests.
Signed-off-by: Lukasz Majewski <lukma@denx.de>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

tools/testing/selftests/net/hsr/Makefile

@@ -3,5 +3,6 @@
 top_srcdir = ../../../../..
 
 TEST_PROGS := hsr_ping.sh
+TEST_FILES += hsr_common.sh
 
 include ../../lib.mk

tools/testing/selftests/net/hsr/hsr_common.sh

+# SPDX-License-Identifier: GPL-2.0
+# Common code for HSR testing scripts
+
+source ../lib.sh
+ret=0
+ksft_skip=4
+
+# $1: IP address
+is_v6()
+{
+	[ -z "${1##*:*}" ]
+}
+
+do_ping()
+{
+	local netns="$1"
+	local connect_addr="$2"
+	local ping_args="-q -c 2"
+
+	if is_v6 "${connect_addr}"; then
+		$ipv6 || return 0
+		ping_args="${ping_args} -6"
+	fi
+
+	ip netns exec ${netns} ping ${ping_args} $connect_addr >/dev/null
+	if [ $? -ne 0 ] ; then
+		echo "$netns -> $connect_addr connectivity [ FAIL ]" 1>&2
+		ret=1
+		return 1
+	fi
+
+	return 0
+}
+
+do_ping_long()
+{
+	local netns="$1"
+	local connect_addr="$2"
+	local ping_args="-q -c 10"
+
+	if is_v6 "${connect_addr}"; then
+		$ipv6 || return 0
+		ping_args="${ping_args} -6"
+	fi
+
+	OUT="$(LANG=C ip netns exec ${netns} ping ${ping_args} $connect_addr | grep received)"
+	if [ $? -ne 0 ] ; then
+		echo "$netns -> $connect_addr ping [ FAIL ]" 1>&2
+		ret=1
+		return 1
+	fi
+
+	VAL="$(echo $OUT | cut -d' ' -f1-8)"
+	if [ "$VAL" != "10 packets transmitted, 10 received, 0% packet loss," ]
+	then
+		echo "$netns -> $connect_addr ping TEST [ FAIL ]"
+		echo "Expect to send and receive 10 packets and no duplicates."
+		echo "Full message: ${OUT}."
+		ret=1
+		return 1
+	fi
+
+	return 0
+}
+
+stop_if_error()
+{
+	local msg="$1"
+
+	if [ ${ret} -ne 0 ]; then
+		echo "FAIL: ${msg}" 1>&2
+		exit ${ret}
+	fi
+}
+
+check_prerequisites()
+{
+	ip -Version > /dev/null 2>&1
+	if [ $? -ne 0 ];then
+		echo "SKIP: Could not run test without ip tool"
+		exit $ksft_skip
+	fi
+}

tools/testing/selftests/net/hsr/hsr_ping.sh

 #!/bin/bash
 # SPDX-License-Identifier: GPL-2.0
 
-source ../lib.sh
-ret=0
-ksft_skip=4
 ipv6=true
 
+source ./hsr_common.sh
+
 optstring="h4"
 usage() {
 	echo "Usage: $0 [OPTION]"
@@ -28,76 +27,6 @@ while getopts "$optstring" option;do
 esac
 done
 
-setup_ns ns1 ns2 ns3
-
-# $1: IP address
-is_v6()
-{
-	[ -z "${1##*:*}" ]
-}
-
-do_ping()
-{
-	local netns="$1"
-	local connect_addr="$2"
-	local ping_args="-q -c 2"
-
-	if is_v6 "${connect_addr}"; then
-		$ipv6 || return 0
-		ping_args="${ping_args} -6"
-	fi
-
-	ip netns exec ${netns} ping ${ping_args} $connect_addr >/dev/null
-	if [ $? -ne 0 ] ; then
-		echo "$netns -> $connect_addr connectivity [ FAIL ]" 1>&2
-		ret=1
-		return 1
-	fi
-
-	return 0
-}
-
-do_ping_long()
-{
-	local netns="$1"
-	local connect_addr="$2"
-	local ping_args="-q -c 10"
-
-	if is_v6 "${connect_addr}"; then
-		$ipv6 || return 0
-		ping_args="${ping_args} -6"
-	fi
-
-	OUT="$(LANG=C ip netns exec ${netns} ping ${ping_args} $connect_addr | grep received)"
-	if [ $? -ne 0 ] ; then
-		echo "$netns -> $connect_addr ping [ FAIL ]" 1>&2
-		ret=1
-		return 1
-	fi
-
-	VAL="$(echo $OUT | cut -d' ' -f1-8)"
-	if [ "$VAL" != "10 packets transmitted, 10 received, 0% packet loss," ]
-	then
-		echo "$netns -> $connect_addr ping TEST [ FAIL ]"
-		echo "Expect to send and receive 10 packets and no duplicates."
-		echo "Full message: ${OUT}."
-		ret=1
-		return 1
-	fi
-
-	return 0
-}
-
-stop_if_error()
-{
-	local msg="$1"
-
-	if [ ${ret} -ne 0 ]; then
-		echo "FAIL: ${msg}" 1>&2
-		exit ${ret}
-	fi
-}
-
 do_complete_ping_test()
 {
 	echo "INFO: Initial validation ping."
@@ -237,11 +166,8 @@ setup_hsr_interfaces()
 	ip -net "$ns3" link set hsr3 up
 }
 
-ip -Version > /dev/null 2>&1
-if [ $? -ne 0 ];then
-	echo "SKIP: Could not run test without ip tool"
-	exit $ksft_skip
-fi
+check_prerequisites
+setup_ns ns1 ns2 ns3
 
 trap cleanup_all_ns EXIT