ip6erspan tunnels are tested in the test_tunnel.sh but not in the
test_progs framework.

Add a new test in test_progs to test ip6erspan tunnels. It uses the same
network topology and the same BPF programs than the script.
Remove test_ip6erspan() from the script.

Signed-off-by: Bastien Curutchet (eBPF Foundation) 
<bastien.curutc...@bootlin.com>
---
 .../testing/selftests/bpf/prog_tests/test_tunnel.c | 41 +++++++++++++++
 tools/testing/selftests/bpf/test_tunnel.sh         | 58 ----------------------
 2 files changed, 41 insertions(+), 58 deletions(-)

diff --git a/tools/testing/selftests/bpf/prog_tests/test_tunnel.c 
b/tools/testing/selftests/bpf/prog_tests/test_tunnel.c
index 
c45170dc55dd93cdf613cc5798b7df78e3080661..cec0b71b5bdd6d88e7b41b99de081b5370896188
 100644
--- a/tools/testing/selftests/bpf/prog_tests/test_tunnel.c
+++ b/tools/testing/selftests/bpf/prog_tests/test_tunnel.c
@@ -109,6 +109,9 @@
 #define ERSPAN_TUNL_DEV0 "erspan00"
 #define ERSPAN_TUNL_DEV1 "erspan11"
 
+#define IP6ERSPAN_TUNL_DEV0 "ip6erspan00"
+#define IP6ERSPAN_TUNL_DEV1 "ip6erspan11"
+
 #define PING_ARGS "-i 0.01 -c 3 -w 10 -q"
 
 static int config_device(void)
@@ -926,6 +929,42 @@ static void test_erspan_tunnel(enum erspan_test test)
        test_tunnel_kern__destroy(skel);
 }
 
+static void test_ip6erspan_tunnel(enum erspan_test test)
+{
+       struct test_tunnel_kern *skel;
+       int set_fd, get_fd;
+       int err;
+
+       skel = test_tunnel_kern__open_and_load();
+       if (!ASSERT_OK_PTR(skel, "test_tunnel_kern__open_and_load"))
+               return;
+
+       switch (test) {
+       case V1:
+               err = add_ipv6_tunnel(IP6ERSPAN_TUNL_DEV0, IP6ERSPAN_TUNL_DEV1,
+                                     "ip6erspan", "seq key 2 erspan_ver 1 
erspan 123");
+               break;
+       case V2:
+               err = add_ipv6_tunnel(IP6ERSPAN_TUNL_DEV0, IP6ERSPAN_TUNL_DEV1,
+                                     "ip6erspan",
+                                     "seq key 2 erspan_ver 2 erspan_dir egress 
erspan_hwid 7");
+               break;
+       }
+       if (!ASSERT_OK(err, "add tunnel"))
+               goto done;
+
+       set_fd = bpf_program__fd(skel->progs.ip4ip6erspan_set_tunnel);
+       get_fd = bpf_program__fd(skel->progs.ip4ip6erspan_get_tunnel);
+       if (generic_attach(IP6ERSPAN_TUNL_DEV1, get_fd, set_fd))
+               goto done;
+
+       ping6_veth0();
+       ping_dev1();
+done:
+       delete_tunnel(IP6ERSPAN_TUNL_DEV0, IP6ERSPAN_TUNL_DEV1);
+       test_tunnel_kern__destroy(skel);
+}
+
 #define RUN_TEST(name, ...)                                            \
        ({                                                              \
                if (test__start_subtest(#name)) {                       \
@@ -951,6 +990,8 @@ static void *test_tunnel_run_tests(void *arg)
        RUN_TEST(ip6gre_tunnel, IP6GRETAP);
        RUN_TEST(erspan_tunnel, V1);
        RUN_TEST(erspan_tunnel, V2);
+       RUN_TEST(ip6erspan_tunnel, V1);
+       RUN_TEST(ip6erspan_tunnel, V2);
 
        return NULL;
 }
diff --git a/tools/testing/selftests/bpf/test_tunnel.sh 
b/tools/testing/selftests/bpf/test_tunnel.sh
index 
e8e7839fb5b5f69a50a6f1fcd606d1cb6dee3c64..2b486df9724ddfe2fde4e9695274cc8ab0b036d4
 100755
--- a/tools/testing/selftests/bpf/test_tunnel.sh
+++ b/tools/testing/selftests/bpf/test_tunnel.sh
@@ -64,36 +64,6 @@ config_device()
        ip addr add dev veth1 172.16.1.200/24
 }
 
-add_ip6erspan_tunnel()
-{
-
-       # assign ipv6 address
-       ip netns exec at_ns0 ip addr add ::11/96 dev veth0
-       ip netns exec at_ns0 ip link set dev veth0 up
-       ip addr add dev veth1 ::22/96
-       ip link set dev veth1 up
-
-       # at_ns0 namespace
-       if [ "$1" == "v1" ]; then
-               ip netns exec at_ns0 \
-               ip link add dev $DEV_NS type $TYPE seq key 2 \
-               local ::11 remote ::22 \
-               erspan_ver 1 erspan 123
-       else
-               ip netns exec at_ns0 \
-               ip link add dev $DEV_NS type $TYPE seq key 2 \
-               local ::11 remote ::22 \
-               erspan_ver 2 erspan_dir egress erspan_hwid 7
-       fi
-       ip netns exec at_ns0 ip addr add dev $DEV_NS 10.1.1.100/24
-       ip netns exec at_ns0 ip link set dev $DEV_NS up
-
-       # root namespace
-       ip link add dev $DEV type $TYPE external
-       ip addr add dev $DEV 10.1.1.200/24
-       ip link set dev $DEV up
-}
-
 add_geneve_tunnel()
 {
        # at_ns0 namespace
@@ -166,29 +136,6 @@ add_ip6tnl_tunnel()
        ip link set dev $DEV up
 }
 
-test_ip6erspan()
-{
-       TYPE=ip6erspan
-       DEV_NS=ip6erspan00
-       DEV=ip6erspan11
-       ret=0
-
-       check $TYPE
-       config_device
-       add_ip6erspan_tunnel $1
-       attach_bpf $DEV ip4ip6erspan_set_tunnel ip4ip6erspan_get_tunnel
-       ping6 $PING_ARG ::11
-       ip netns exec at_ns0 ping $PING_ARG 10.1.1.200
-       check_err $?
-       cleanup
-
-       if [ $ret -ne 0 ]; then
-                echo -e ${RED}"FAIL: $TYPE"${NC}
-                return 1
-        fi
-        echo -e ${GREEN}"PASS: $TYPE"${NC}
-}
-
 test_geneve()
 {
        TYPE=geneve
@@ -341,7 +288,6 @@ cleanup()
        ip link del ip6ip6tnl11 2> /dev/null
        ip link del geneve11 2> /dev/null
        ip link del ip6geneve11 2> /dev/null
-       ip link del ip6erspan11 2> /dev/null
 }
 
 cleanup_exit()
@@ -378,10 +324,6 @@ bpf_tunnel_test()
 {
        local errors=0
 
-       echo "Testing IP6ERSPAN tunnel..."
-       test_ip6erspan v2
-       errors=$(( $errors + $? ))
-
        echo "Testing GENEVE tunnel..."
        test_geneve
        errors=$(( $errors + $? ))

-- 
2.48.1


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