selftests/bpf: test_xdp_veth: Add new test cases for XDP flags

The XDP redirection is tested without any flag provided to the
xdp_attach() function.

Add two subtests that check the correct behaviour with
XDP_FLAGS_{DRV/SKB}_MODE flags

Signed-off-by: Bastien Curutchet (eBPF Foundation) <bastien.curutchet@bootlin.com>
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
Acked-by: Stanislav Fomichev <sdf@fomichev.me>
Link: https://patch.msgid.link/20250131-redirect-multi-v4-10-970b33678512@bootlin.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

diff --git a/tools/testing/selftests/bpf/prog_tests/test_xdp_veth.c b/tools/testing/selftests/bpf/prog_tests/test_xdp_veth.c
index b869d466ada1d2aa00b72013990e4e34fb0315b4..73a440e44d5287ae6246e074737483f31aa484fb 100644 (file)
--- a/tools/testing/selftests/bpf/prog_tests/test_xdp_veth.c
+++ b/tools/testing/selftests/bpf/prog_tests/test_xdp_veth.c
@@ -33,6 +33,7 @@
 #include "xdp_dummy.skel.h"
 #include "xdp_redirect_map.skel.h"
 #include "xdp_tx.skel.h"
+#include <uapi/linux/if_link.h>
 
 #define VETH_PAIRS_COUNT       3
 #define VETH_NAME_MAX_LEN      32
@@ -187,26 +188,26 @@ static void cleanup_network(struct veth_configuration *net_config)
 }
 
 #define VETH_REDIRECT_SKEL_NB  3
-void test_xdp_veth_redirect(void)
+static void xdp_veth_redirect(u32 flags)
 {
        struct prog_configuration ping_config[VETH_PAIRS_COUNT] = {
                {
                        .local_name = "xdp_redirect_map_0",
                        .remote_name = "xdp_dummy_prog",
-                       .local_flags = 0,
-                       .remote_flags = 0,
+                       .local_flags = flags,
+                       .remote_flags = flags,
                },
                {
                        .local_name = "xdp_redirect_map_1",
                        .remote_name = "xdp_tx",
-                       .local_flags = 0,
-                       .remote_flags = 0,
+                       .local_flags = flags,
+                       .remote_flags = flags,
                },
                {
                        .local_name = "xdp_redirect_map_2",
                        .remote_name = "xdp_dummy_prog",
-                       .local_flags = 0,
-                       .remote_flags = 0,
+                       .local_flags = flags,
+                       .remote_flags = flags,
                }
        };
        struct veth_configuration net_config[VETH_PAIRS_COUNT];
@@ -271,3 +272,15 @@ destroy_xdp_dummy:
 
        cleanup_network(net_config);
 }
+
+void test_xdp_veth_redirect(void)
+{
+       if (test__start_subtest("0"))
+               xdp_veth_redirect(0);
+
+       if (test__start_subtest("DRV_MODE"))
+               xdp_veth_redirect(XDP_FLAGS_DRV_MODE);
+
+       if (test__start_subtest("SKB_MODE"))
+               xdp_veth_redirect(XDP_FLAGS_SKB_MODE);
+}