netdev - [PATCH net 3/7] selftests: mlxsw: Test nexthop offload indication

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Message-Id: <20190611071946.11089-4-idosch@idosch.org>
Date:   Tue, 11 Jun 2019 10:19:42 +0300
From:   Ido Schimmel <idosch@...sch.org>
To:     netdev@...r.kernel.org
Cc:     davem@...emloft.net, jiri@...lanox.com, petrm@...lanox.com,
        alexpe@...lanox.com, mlxsw@...lanox.com,
        Ido Schimmel <idosch@...lanox.com>
Subject: [PATCH net 3/7] selftests: mlxsw: Test nexthop offload indication

From: Ido Schimmel <idosch@...lanox.com>

Test that IPv4 and IPv6 nexthops are correctly marked with offload
indication in response to neighbour events.

Signed-off-by: Ido Schimmel <idosch@...lanox.com>
---
 .../selftests/drivers/net/mlxsw/rtnetlink.sh  | 47 +++++++++++++++++++
 1 file changed, 47 insertions(+)

diff --git a/tools/testing/selftests/drivers/net/mlxsw/rtnetlink.sh b/tools/testing/selftests/drivers/net/mlxsw/rtnetlink.sh
index 1c30f302a1e7..5c39e5f6a480 100755
--- a/tools/testing/selftests/drivers/net/mlxsw/rtnetlink.sh
+++ b/tools/testing/selftests/drivers/net/mlxsw/rtnetlink.sh
@@ -28,6 +28,7 @@ ALL_TESTS="
 	vlan_interface_uppers_test
 	bridge_extern_learn_test
 	neigh_offload_test
+	nexthop_offload_test
 	devlink_reload_test
 "
 NUM_NETIFS=2
@@ -607,6 +608,52 @@ neigh_offload_test()
 	ip -4 address del 192.0.2.1/24 dev $swp1
 }
 
+nexthop_offload_test()
+{
+	# Test that IPv4 and IPv6 nexthops are marked as offloaded
+	RET=0
+
+	sysctl_set net.ipv6.conf.$swp2.keep_addr_on_down 1
+	simple_if_init $swp1 192.0.2.1/24 2001:db8:1::1/64
+	simple_if_init $swp2 192.0.2.2/24 2001:db8:1::2/64
+	setup_wait
+
+	ip -4 route add 198.51.100.0/24 vrf v$swp1 \
+		nexthop via 192.0.2.2 dev $swp1
+	ip -6 route add 2001:db8:2::/64 vrf v$swp1 \
+		nexthop via 2001:db8:1::2 dev $swp1
+
+	ip -4 route show 198.51.100.0/24 vrf v$swp1 | grep -q offload
+	check_err $? "ipv4 nexthop not marked as offloaded when should"
+	ip -6 route show 2001:db8:2::/64 vrf v$swp1 | grep -q offload
+	check_err $? "ipv6 nexthop not marked as offloaded when should"
+
+	ip link set dev $swp2 down
+	sleep 1
+
+	ip -4 route show 198.51.100.0/24 vrf v$swp1 | grep -q offload
+	check_fail $? "ipv4 nexthop marked as offloaded when should not"
+	ip -6 route show 2001:db8:2::/64 vrf v$swp1 | grep -q offload
+	check_fail $? "ipv6 nexthop marked as offloaded when should not"
+
+	ip link set dev $swp2 up
+	setup_wait
+
+	ip -4 route show 198.51.100.0/24 vrf v$swp1 | grep -q offload
+	check_err $? "ipv4 nexthop not marked as offloaded after neigh add"
+	ip -6 route show 2001:db8:2::/64 vrf v$swp1 | grep -q offload
+	check_err $? "ipv6 nexthop not marked as offloaded after neigh add"
+
+	log_test "nexthop offload indication"
+
+	ip -6 route del 2001:db8:2::/64 vrf v$swp1
+	ip -4 route del 198.51.100.0/24 vrf v$swp1
+
+	simple_if_fini $swp2 192.0.2.2/24 2001:db8:1::2/64
+	simple_if_fini $swp1 192.0.2.1/24 2001:db8:1::1/64
+	sysctl_restore net.ipv6.conf.$swp2.keep_addr_on_down
+}
+
 devlink_reload_test()
 {
 	# Test that after executing all the above configuration tests, a
-- 
2.20.1