test: hsr: Add test for HSR RedBOX (HSR-SAN) mode of operation

This patch adds hsr_redbox.sh script to test if HSR-SAN mode of operation
works correctly.
Signed-off-by: Lukasz Majewski <lukma@denx.de>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

tools/testing/selftests/net/hsr/Makefile

@@ -2,7 +2,7 @@
 
 top_srcdir = ../../../../..
 
-TEST_PROGS := hsr_ping.sh
+TEST_PROGS := hsr_ping.sh hsr_redbox.sh
 TEST_FILES += hsr_common.sh
 
 include ../../lib.mk

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

+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+
+ipv6=false
+
+source ./hsr_common.sh
+
+do_complete_ping_test()
+{
+	echo "INFO: Initial validation ping (HSR-SAN/RedBox)."
+	# Each node has to be able each one.
+	do_ping "${ns1}" 100.64.0.2
+	do_ping "${ns2}" 100.64.0.1
+	# Ping from SAN to hsr1 (via hsr2)
+	do_ping "${ns3}" 100.64.0.1
+	do_ping "${ns1}" 100.64.0.3
+	stop_if_error "Initial validation failed."
+
+	# Wait for MGNT HSR frames being received and nodes being
+	# merged.
+	sleep 5
+
+	echo "INFO: Longer ping test (HSR-SAN/RedBox)."
+	# Ping from SAN to hsr1 (via hsr2)
+	do_ping_long "${ns3}" 100.64.0.1
+	# Ping from hsr1 (via hsr2) to SAN
+	do_ping_long "${ns1}" 100.64.0.3
+	stop_if_error "Longer ping test failed."
+
+	echo "INFO: All good."
+}
+
+setup_hsr_interfaces()
+{
+	local HSRv="$1"
+
+	echo "INFO: preparing interfaces for HSRv${HSRv} (HSR-SAN/RedBox)."
+
+#       |NS1                     |
+#       |                        |
+#       |    /-- hsr1 --\        |
+#       | ns1eth1     ns1eth2    |
+#       |------------------------|
+#            |            |
+#            |            |
+#            |            |
+#       |------------------------|        |-----------|
+#       | ns2eth1     ns2eth2    |        |           |
+#       |    \-- hsr2 --/        |        |           |
+#       |            \           |        |           |
+#       |             ns2eth3    |--------| ns3eth1   |
+#       |             (interlink)|        |           |
+#       |NS2 (RedBOX)            |        |NS3 (SAN)  |
+#
+	# Check if iproute2 supports adding interlink port to hsrX device
+	ip link help hsr | grep -q INTERLINK
+	[ $? -ne 0 ] && { echo "iproute2: HSR interlink interface not supported!"; exit 0; }
+
+	# Create interfaces for name spaces
+	ip link add ns1eth1 netns "${ns1}" type veth peer name ns2eth1 netns "${ns2}"
+	ip link add ns1eth2 netns "${ns1}" type veth peer name ns2eth2 netns "${ns2}"
+	ip link add ns3eth1 netns "${ns3}" type veth peer name ns2eth3 netns "${ns2}"
+
+	sleep 1
+
+	ip -n "${ns1}" link set ns1eth1 up
+	ip -n "${ns1}" link set ns1eth2 up
+
+	ip -n "${ns2}" link set ns2eth1 up
+	ip -n "${ns2}" link set ns2eth2 up
+	ip -n "${ns2}" link set ns2eth3 up
+
+	ip -n "${ns3}" link set ns3eth1 up
+
+	ip -net "${ns1}" link add name hsr1 type hsr slave1 ns1eth1 slave2 ns1eth2 supervision 45 version ${HSRv} proto 0
+	ip -net "${ns2}" link add name hsr2 type hsr slave1 ns2eth1 slave2 ns2eth2 interlink ns2eth3 supervision 45 version ${HSRv} proto 0
+
+	ip -n "${ns1}" addr add 100.64.0.1/24 dev hsr1
+	ip -n "${ns2}" addr add 100.64.0.2/24 dev hsr2
+	ip -n "${ns3}" addr add 100.64.0.3/24 dev ns3eth1
+
+	ip -n "${ns1}" link set hsr1 up
+	ip -n "${ns2}" link set hsr2 up
+}
+
+check_prerequisites
+setup_ns ns1 ns2 ns3
+
+setup_hsr_interfaces 1
+do_complete_ping_test
+
+exit $ret