selftests: forwarding: Add device-only nexthop test

In a similar fashion to router_multipath.sh and its nexthop objects
version router_mpath_nh.sh, create a nexthop objects version of
router.sh.

It reuses the same topology, but uses device-only nexthop objects
instead of legacy ones.

Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/tools/testing/selftests/net/forwarding/router_nh.sh b/tools/testing/selftests/net/forwarding/router_nh.sh
new file mode 100755 (executable)
index 0000000..f3a5373
--- /dev/null
+++ b/tools/testing/selftests/net/forwarding/router_nh.sh
@@ -0,0 +1,160 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+
+ALL_TESTS="
+       ping_ipv4
+       ping_ipv6
+"
+
+NUM_NETIFS=4
+source lib.sh
+source tc_common.sh
+
+h1_create()
+{
+       vrf_create "vrf-h1"
+       ip link set dev $h1 master vrf-h1
+
+       ip link set dev vrf-h1 up
+       ip link set dev $h1 up
+
+       ip address add 192.0.2.2/24 dev $h1
+       ip address add 2001:db8:1::2/64 dev $h1
+
+       ip route add 198.51.100.0/24 vrf vrf-h1 nexthop via 192.0.2.1
+       ip route add 2001:db8:2::/64 vrf vrf-h1 nexthop via 2001:db8:1::1
+}
+
+h1_destroy()
+{
+       ip route del 2001:db8:2::/64 vrf vrf-h1
+       ip route del 198.51.100.0/24 vrf vrf-h1
+
+       ip address del 2001:db8:1::2/64 dev $h1
+       ip address del 192.0.2.2/24 dev $h1
+
+       ip link set dev $h1 down
+       vrf_destroy "vrf-h1"
+}
+
+h2_create()
+{
+       vrf_create "vrf-h2"
+       ip link set dev $h2 master vrf-h2
+
+       ip link set dev vrf-h2 up
+       ip link set dev $h2 up
+
+       ip address add 198.51.100.2/24 dev $h2
+       ip address add 2001:db8:2::2/64 dev $h2
+
+       ip route add 192.0.2.0/24 vrf vrf-h2 nexthop via 198.51.100.1
+       ip route add 2001:db8:1::/64 vrf vrf-h2 nexthop via 2001:db8:2::1
+}
+
+h2_destroy()
+{
+       ip route del 2001:db8:1::/64 vrf vrf-h2
+       ip route del 192.0.2.0/24 vrf vrf-h2
+
+       ip address del 2001:db8:2::2/64 dev $h2
+       ip address del 198.51.100.2/24 dev $h2
+
+       ip link set dev $h2 down
+       vrf_destroy "vrf-h2"
+}
+
+router_create()
+{
+       ip link set dev $rp1 up
+       ip link set dev $rp2 up
+
+       tc qdisc add dev $rp2 clsact
+
+       ip address add 192.0.2.1/24 dev $rp1
+       ip address add 2001:db8:1::1/64 dev $rp1
+
+       ip address add 198.51.100.1/24 dev $rp2
+       ip address add 2001:db8:2::1/64 dev $rp2
+}
+
+router_destroy()
+{
+       ip address del 2001:db8:2::1/64 dev $rp2
+       ip address del 198.51.100.1/24 dev $rp2
+
+       ip address del 2001:db8:1::1/64 dev $rp1
+       ip address del 192.0.2.1/24 dev $rp1
+
+       tc qdisc del dev $rp2 clsact
+
+       ip link set dev $rp2 down
+       ip link set dev $rp1 down
+}
+
+routing_nh_obj()
+{
+       # Create the nexthops as AF_INET6, so that IPv4 and IPv6 routes could
+       # use them.
+       ip -6 nexthop add id 101 dev $rp1
+       ip -6 nexthop add id 102 dev $rp2
+
+       ip route replace 192.0.2.0/24 nhid 101
+       ip route replace 2001:db8:1::/64 nhid 101
+       ip route replace 198.51.100.0/24 nhid 102
+       ip route replace 2001:db8:2::/64 nhid 102
+}
+
+setup_prepare()
+{
+       h1=${NETIFS[p1]}
+       rp1=${NETIFS[p2]}
+
+       rp2=${NETIFS[p3]}
+       h2=${NETIFS[p4]}
+
+       rp1mac=$(mac_get $rp1)
+
+       vrf_prepare
+
+       h1_create
+       h2_create
+
+       router_create
+
+       forwarding_enable
+}
+
+cleanup()
+{
+       pre_cleanup
+
+       forwarding_restore
+
+       router_destroy
+
+       h2_destroy
+       h1_destroy
+
+       vrf_cleanup
+}
+
+ping_ipv4()
+{
+       ping_test $h1 198.51.100.2
+}
+
+ping_ipv6()
+{
+       ping6_test $h1 2001:db8:2::2
+}
+
+trap cleanup EXIT
+
+setup_prepare
+setup_wait
+routing_nh_obj
+
+tests_run
+
+exit $EXIT_STATUS