selftests: forwarding: Allow running specific tests

Similar to commit a511858c ("selftests: fib_tests: Allow user to run
a specific test"), allow user to run only a subset of the tests using
the TESTS environment variable.

This is useful when not all the tests can pass on a given system.

Example:
# export TESTS="ping_ipv4 ping_ipv6"
# ./bridge_vlan_aware.sh
TEST: ping					[PASS]
TEST: ping6					[PASS]
Signed-off-by: Petr Machata <petrm@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

tools/testing/selftests/net/forwarding/bridge_vlan_aware.sh

 #!/bin/bash
 # SPDX-License-Identifier: GPL-2.0
 
+ALL_TESTS="ping_ipv4 ping_ipv6 learning flooding"
 NUM_NETIFS=4
 CHECK_TC="yes"
 source lib.sh
@@ -75,14 +76,31 @@ cleanup()
 	vrf_cleanup
 }
 
+ping_ipv4()
+{
+	ping_test $h1 192.0.2.2
+}
+
+ping_ipv6()
+{
+	ping6_test $h1 2001:db8:1::2
+}
+
+learning()
+{
+	learning_test "br0" $swp1 $h1 $h2
+}
+
+flooding()
+{
+	flood_test $swp2 $h1 $h2
+}
+
 trap cleanup EXIT
 
 setup_prepare
 setup_wait
 
-ping_test $h1 192.0.2.2
-ping6_test $h1 2001:db8:1::2
-learning_test "br0" $swp1 $h1 $h2
-flood_test $swp2 $h1 $h2
+tests_run
 
 exit $EXIT_STATUS

tools/testing/selftests/net/forwarding/bridge_vlan_unaware.sh

 #!/bin/bash
 # SPDX-License-Identifier: GPL-2.0
 
+ALL_TESTS="ping_ipv4 ping_ipv6 learning flooding"
 NUM_NETIFS=4
 source lib.sh
 
@@ -73,14 +74,31 @@ cleanup()
 	vrf_cleanup
 }
 
+ping_ipv4()
+{
+	ping_test $h1 192.0.2.2
+}
+
+ping_ipv6()
+{
+	ping6_test $h1 2001:db8:1::2
+}
+
+learning()
+{
+	learning_test "br0" $swp1 $h1 $h2
+}
+
+flooding()
+{
+	flood_test $swp2 $h1 $h2
+}
+
 trap cleanup EXIT
 
 setup_prepare
 setup_wait
 
-ping_test $h1 192.0.2.2
-ping6_test $h1 2001:db8:1::2
-learning_test "br0" $swp1 $h1 $h2
-flood_test $swp2 $h1 $h2
+tests_run
 
 exit $EXIT_STATUS

tools/testing/selftests/net/forwarding/lib.sh

@@ -477,6 +477,15 @@ matchall_sink_create()
 	   action drop
 }
 
+tests_run()
+{
+	local current_test
+
+	for current_test in ${TESTS:-$ALL_TESTS}; do
+		$current_test
+	done
+}
+
 ##############################################################################
 # Tests
 

tools/testing/selftests/net/forwarding/mirror_gre.sh

@@ -10,6 +10,14 @@
 # traffic. Test that the payload is what is expected (ICMP ping request or
 # reply, depending on test).
 
+ALL_TESTS="
+	test_gretap
+	test_ip6gretap
+	test_gretap_mac
+	test_ip6gretap_mac
+	test_two_spans
+"
+
 NUM_NETIFS=6
 source lib.sh
 source mirror_lib.sh
@@ -100,22 +108,36 @@ test_two_spans()
 	log_test "two simultaneously configured mirrors ($tcflags)"
 }
 
-test_all()
+test_gretap()
 {
-	slow_path_trap_install $swp1 ingress
-	slow_path_trap_install $swp1 egress
-
 	full_test_span_gre_dir gt4 ingress 8 0 "mirror to gretap"
-	full_test_span_gre_dir gt6 ingress 8 0 "mirror to ip6gretap"
 	full_test_span_gre_dir gt4 egress 0 8 "mirror to gretap"
+}
+
+test_ip6gretap()
+{
+	full_test_span_gre_dir gt6 ingress 8 0 "mirror to ip6gretap"
 	full_test_span_gre_dir gt6 egress 0 8 "mirror to ip6gretap"
+}
 
+test_gretap_mac()
+{
 	test_span_gre_mac gt4 ingress ip "mirror to gretap"
-	test_span_gre_mac gt6 ingress ipv6 "mirror to ip6gretap"
 	test_span_gre_mac gt4 egress ip "mirror to gretap"
+}
+
+test_ip6gretap_mac()
+{
+	test_span_gre_mac gt6 ingress ipv6 "mirror to ip6gretap"
 	test_span_gre_mac gt6 egress ipv6 "mirror to ip6gretap"
+}
 
-	test_two_spans
+test_all()
+{
+	slow_path_trap_install $swp1 ingress
+	slow_path_trap_install $swp1 egress
+
+	tests_run
 
 	slow_path_trap_uninstall $swp1 egress
 	slow_path_trap_uninstall $swp1 ingress

tools/testing/selftests/net/forwarding/mirror_gre_bound.sh

@@ -42,6 +42,11 @@
 # underlay manner, i.e. with a bound dummy device that marks underlay VRF where
 # the encapsulated packed should be routed.
 
+ALL_TESTS="
+	test_gretap
+	test_ip6gretap
+"
+
 NUM_NETIFS=6
 source lib.sh
 source mirror_lib.sh
@@ -178,6 +183,18 @@ cleanup()
 	vrf_cleanup
 }
 
+test_gretap()
+{
+	full_test_span_gre_dir gt4 ingress 8 0 "mirror to gretap w/ UL"
+	full_test_span_gre_dir gt4 egress  0 8 "mirror to gretap w/ UL"
+}
+
+test_ip6gretap()
+{
+	full_test_span_gre_dir gt6 ingress 8 0 "mirror to ip6gretap w/ UL"
+	full_test_span_gre_dir gt6 egress  0 8 "mirror to ip6gretap w/ UL"
+}
+
 test_all()
 {
 	RET=0
@@ -185,11 +202,7 @@ test_all()
 	slow_path_trap_install $swp1 ingress
 	slow_path_trap_install $swp1 egress
 
-	full_test_span_gre_dir gt4 ingress 8 0 "mirror to gretap w/ UL"
-	full_test_span_gre_dir gt6 ingress 8 0 "mirror to ip6gretap w/ UL"
-
-	full_test_span_gre_dir gt4 egress  0 8 "mirror to gretap w/ UL"
-	full_test_span_gre_dir gt6 egress  0 8 "mirror to ip6gretap w/ UL"
+	tests_run
 
 	slow_path_trap_uninstall $swp1 egress
 	slow_path_trap_uninstall $swp1 ingress

tools/testing/selftests/net/forwarding/mirror_gre_changes.sh

@@ -7,6 +7,13 @@
 # Test how mirrors to gretap and ip6gretap react to changes to relevant
 # configuration.
 
+ALL_TESTS="
+	test_ttl
+	test_tun_up
+	test_egress_up
+	test_remote_ip
+"
+
 NUM_NETIFS=6
 source lib.sh
 source mirror_lib.sh
@@ -155,22 +162,36 @@ test_span_gre_remote_ip()
 	log_test "$what: remote address change ($tcflags)"
 }
 
-test_all()
+test_ttl()
 {
-	slow_path_trap_install $swp1 ingress
-	slow_path_trap_install $swp1 egress
-
 	test_span_gre_ttl gt4 gretap ip "mirror to gretap"
 	test_span_gre_ttl gt6 ip6gretap ipv6 "mirror to ip6gretap"
+}
 
+test_tun_up()
+{
 	test_span_gre_tun_up gt4 "mirror to gretap"
 	test_span_gre_tun_up gt6 "mirror to ip6gretap"
+}
 
+test_egress_up()
+{
 	test_span_gre_egress_up gt4 192.0.2.130 "mirror to gretap"
 	test_span_gre_egress_up gt6 2001:db8:2::2 "mirror to ip6gretap"
+}
 
+test_remote_ip()
+{
 	test_span_gre_remote_ip gt4 gretap 192.0.2.130 192.0.2.132 "mirror to gretap"
 	test_span_gre_remote_ip gt6 ip6gretap 2001:db8:2::2 2001:db8:2::4 "mirror to ip6gretap"
+}
+
+test_all()
+{
+	slow_path_trap_install $swp1 ingress
+	slow_path_trap_install $swp1 egress
+
+	tests_run
 
 	slow_path_trap_uninstall $swp1 egress
 	slow_path_trap_uninstall $swp1 ingress

tools/testing/selftests/net/forwarding/mirror_gre_flower.sh

@@ -10,6 +10,11 @@
 # this address, mirroring takes place, whereas when pinging the other one,
 # there's no mirroring.
 
+ALL_TESTS="
+	test_gretap
+	test_ip6gretap
+"
+
 NUM_NETIFS=6
 source lib.sh
 source mirror_lib.sh
@@ -81,6 +86,18 @@ full_test_span_gre_dir_acl()
 	log_test "$direction $what ($tcflags)"
 }
 
+test_gretap()
+{
+	full_test_span_gre_dir_acl gt4 ingress 8 0 192.0.2.4 "ACL mirror to gretap"
+	full_test_span_gre_dir_acl gt4 egress 0 8 192.0.2.3 "ACL mirror to gretap"
+}
+
+test_ip6gretap()
+{
+	full_test_span_gre_dir_acl gt6 ingress 8 0 192.0.2.4 "ACL mirror to ip6gretap"
+	full_test_span_gre_dir_acl gt6 egress 0 8 192.0.2.3 "ACL mirror to ip6gretap"
+}
+
 test_all()
 {
 	RET=0
@@ -88,11 +105,7 @@ test_all()
 	slow_path_trap_install $swp1 ingress
 	slow_path_trap_install $swp1 egress
 
-	full_test_span_gre_dir_acl gt4 ingress 8 0 192.0.2.4 "ACL mirror to gretap"
-	full_test_span_gre_dir_acl gt6 ingress 8 0 192.0.2.4 "ACL mirror to ip6gretap"
-
-	full_test_span_gre_dir_acl gt4 egress 0 8 192.0.2.3 "ACL mirror to gretap"
-	full_test_span_gre_dir_acl gt6 egress 0 8 192.0.2.3 "ACL mirror to ip6gretap"
+	tests_run
 
 	slow_path_trap_uninstall $swp1 egress
 	slow_path_trap_uninstall $swp1 ingress

tools/testing/selftests/net/forwarding/mirror_gre_neigh.sh

@@ -9,6 +9,11 @@
 # is set up. Later on, the neighbor is deleted and it is expected to be
 # reinitialized using the usual ARP process, and the mirroring offload updated.
 
+ALL_TESTS="
+	test_gretap
+	test_ip6gretap
+"
+
 NUM_NETIFS=6
 source lib.sh
 source mirror_lib.sh
@@ -69,15 +74,24 @@ test_span_gre_neigh()
 	log_test "$direction $what: neighbor change ($tcflags)"
 }
 
-test_all()
+test_gretap()
 {
-	slow_path_trap_install $swp1 ingress
-	slow_path_trap_install $swp1 egress
-
 	test_span_gre_neigh 192.0.2.130 gt4 ingress "mirror to gretap"
 	test_span_gre_neigh 192.0.2.130 gt4 egress "mirror to gretap"
+}
+
+test_ip6gretap()
+{
 	test_span_gre_neigh 2001:db8:2::2 gt6 ingress "mirror to ip6gretap"
 	test_span_gre_neigh 2001:db8:2::2 gt6 egress "mirror to ip6gretap"
+}
+
+test_all()
+{
+	slow_path_trap_install $swp1 ingress
+	slow_path_trap_install $swp1 egress
+
+	tests_run
 
 	slow_path_trap_uninstall $swp1 egress
 	slow_path_trap_uninstall $swp1 ingress

tools/testing/selftests/net/forwarding/mirror_gre_nh.sh

@@ -7,6 +7,11 @@
 # Test that gretap and ip6gretap mirroring works when the other tunnel endpoint
 # is reachable through a next-hop route (as opposed to directly-attached route).
 
+ALL_TESTS="
+	test_gretap
+	test_ip6gretap
+"
+
 NUM_NETIFS=6
 source lib.sh
 source mirror_lib.sh
@@ -92,8 +97,7 @@ test_all()
 	slow_path_trap_install $swp1 ingress
 	slow_path_trap_install $swp1 egress
 
-	test_gretap
-	test_ip6gretap
+	tests_run
 
 	slow_path_trap_uninstall $swp1 egress
 	slow_path_trap_uninstall $swp1 ingress

tools/testing/selftests/net/forwarding/router.sh

 #!/bin/bash
 # SPDX-License-Identifier: GPL-2.0
 
+ALL_TESTS="ping_ipv4 ping_ipv6"
 NUM_NETIFS=4
 source lib.sh
 
@@ -114,12 +115,21 @@ cleanup()
 	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
 
-ping_test $h1 198.51.100.2
-ping6_test $h1 2001:db8:2::2
+tests_run
 
 exit $EXIT_STATUS

tools/testing/selftests/net/forwarding/router_multipath.sh

 #!/bin/bash
 # SPDX-License-Identifier: GPL-2.0
 
+ALL_TESTS="ping_ipv4 ping_ipv6 multipath_test"
 NUM_NETIFS=8
 source lib.sh
 
@@ -364,13 +365,21 @@ cleanup()
 	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
 
-ping_test $h1 198.51.100.2
-ping6_test $h1 2001:db8:2::2
-multipath_test
+tests_run
 
 exit $EXIT_STATUS

tools/testing/selftests/net/forwarding/tc_actions.sh

 #!/bin/bash
 # SPDX-License-Identifier: GPL-2.0
 
+ALL_TESTS="gact_drop_and_ok_test mirred_egress_redirect_test \
+	mirred_egress_mirror_test gact_trap_test"
 NUM_NETIFS=4
 source tc_common.sh
 source lib.sh
@@ -111,6 +113,10 @@ gact_trap_test()
 {
 	RET=0
 
+	if [[ "$tcflags" != "skip_sw" ]]; then
+		return 0;
+	fi
+
 	tc filter add dev $swp1 ingress protocol ip pref 1 handle 101 flower \
 		skip_hw dst_ip 192.0.2.2 action drop
 	tc filter add dev $swp1 ingress protocol ip pref 3 handle 103 flower \
@@ -179,24 +185,29 @@ cleanup()
 	ip link set $swp1 address $swp1origmac
 }
 
+mirred_egress_redirect_test()
+{
+	mirred_egress_test "redirect"
+}
+
+mirred_egress_mirror_test()
+{
+	mirred_egress_test "mirror"
+}
+
 trap cleanup EXIT
 
 setup_prepare
 setup_wait
 
-gact_drop_and_ok_test
-mirred_egress_test "redirect"
-mirred_egress_test "mirror"
+tests_run
 
 tc_offload_check
 if [[ $? -ne 0 ]]; then
 	log_info "Could not test offloaded functionality"
 else
 	tcflags="skip_sw"
-	gact_drop_and_ok_test
-	mirred_egress_test "redirect"
-	mirred_egress_test "mirror"
-	gact_trap_test
+	tests_run
 fi
 
 exit $EXIT_STATUS

tools/testing/selftests/net/forwarding/tc_chains.sh

 #!/bin/bash
 # SPDX-License-Identifier: GPL-2.0
 
+ALL_TESTS="unreachable_chain_test gact_goto_chain_test"
 NUM_NETIFS=2
 source tc_common.sh
 source lib.sh
@@ -107,16 +108,14 @@ trap cleanup EXIT
 setup_prepare
 setup_wait
 
-unreachable_chain_test
-gact_goto_chain_test
+tests_run
 
 tc_offload_check
 if [[ $? -ne 0 ]]; then
 	log_info "Could not test offloaded functionality"
 else
 	tcflags="skip_sw"
-	unreachable_chain_test
-	gact_goto_chain_test
+	tests_run
 fi
 
 exit $EXIT_STATUS

tools/testing/selftests/net/forwarding/tc_flower.sh

 #!/bin/bash
 # SPDX-License-Identifier: GPL-2.0
 
+ALL_TESTS="match_dst_mac_test match_src_mac_test match_dst_ip_test \
+	match_src_ip_test match_ip_flags_test"
 NUM_NETIFS=2
 source tc_common.sh
 source lib.sh
@@ -245,22 +247,14 @@ trap cleanup EXIT
 setup_prepare
 setup_wait
 
-match_dst_mac_test
-match_src_mac_test
-match_dst_ip_test
-match_src_ip_test
-match_ip_flags_test
+tests_run
 
 tc_offload_check
 if [[ $? -ne 0 ]]; then
 	log_info "Could not test offloaded functionality"
 else
 	tcflags="skip_sw"
-	match_dst_mac_test
-	match_src_mac_test
-	match_dst_ip_test
-	match_src_ip_test
-	match_ip_flags_test
+	tests_run
 fi
 
 exit $EXIT_STATUS

tools/testing/selftests/net/forwarding/tc_shblocks.sh

 #!/bin/bash
 # SPDX-License-Identifier: GPL-2.0
 
+ALL_TESTS="shared_block_test"
 NUM_NETIFS=4
 source tc_common.sh
 source lib.sh
@@ -109,14 +110,14 @@ trap cleanup EXIT
 setup_prepare
 setup_wait
 
-shared_block_test
+tests_run
 
 tc_offload_check
 if [[ $? -ne 0 ]]; then
 	log_info "Could not test offloaded functionality"
 else
 	tcflags="skip_sw"
-	shared_block_test
+	tests_run
 fi
 
 exit $EXIT_STATUS