diff options
| author | Daniel Borkmann <daniel@iogearbox.net> | 2025-09-26 19:12:01 +0200 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2025-09-27 06:24:27 -0700 |
| commit | 0e8e60e86cf3292e747a0fa7cc13127f290323ad (patch) | |
| tree | 38273a6aedb140bcfa81a428e8cc67d25b136821 /tools/testing/selftests/bpf/prog_tests | |
| parent | bpf: Enforce expected_attach_type for tailcall compatibility (diff) | |
| download | linux-0e8e60e86cf3292e747a0fa7cc13127f290323ad.tar.gz linux-0e8e60e86cf3292e747a0fa7cc13127f290323ad.zip | |
selftests/bpf: Add test case for different expected_attach_type
Add a small test case which adds two programs - one calling the other
through a tailcall - and check that BPF rejects them in case of different
expected_attach_type values:
# ./vmtest.sh -- ./test_progs -t xdp_devmap
[...]
#641/1 xdp_devmap_attach/DEVMAP with programs in entries:OK
#641/2 xdp_devmap_attach/DEVMAP with frags programs in entries:OK
#641/3 xdp_devmap_attach/Verifier check of DEVMAP programs:OK
#641/4 xdp_devmap_attach/DEVMAP with programs in entries on veth:OK
#641 xdp_devmap_attach:OK
Summary: 2/4 PASSED, 0 SKIPPED, 0 FAILED
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/r/20250926171201.188490-2-daniel@iogearbox.net
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'tools/testing/selftests/bpf/prog_tests')
| -rw-r--r-- | tools/testing/selftests/bpf/prog_tests/xdp_devmap_attach.c | 31 |
1 files changed, 30 insertions, 1 deletions
diff --git a/tools/testing/selftests/bpf/prog_tests/xdp_devmap_attach.c b/tools/testing/selftests/bpf/prog_tests/xdp_devmap_attach.c index 461ab18705d5..a8ab05216c38 100644 --- a/tools/testing/selftests/bpf/prog_tests/xdp_devmap_attach.c +++ b/tools/testing/selftests/bpf/prog_tests/xdp_devmap_attach.c @@ -7,6 +7,7 @@ #include <test_progs.h> #include "test_xdp_devmap_helpers.skel.h" +#include "test_xdp_devmap_tailcall.skel.h" #include "test_xdp_with_devmap_frags_helpers.skel.h" #include "test_xdp_with_devmap_helpers.skel.h" @@ -107,6 +108,29 @@ static void test_neg_xdp_devmap_helpers(void) } } +static void test_xdp_devmap_tailcall(enum bpf_attach_type prog_dev, + enum bpf_attach_type prog_tail, + bool expect_reject) +{ + struct test_xdp_devmap_tailcall *skel; + int err; + + skel = test_xdp_devmap_tailcall__open(); + if (!ASSERT_OK_PTR(skel, "test_xdp_devmap_tailcall__open")) + return; + + bpf_program__set_expected_attach_type(skel->progs.xdp_devmap, prog_dev); + bpf_program__set_expected_attach_type(skel->progs.xdp_entry, prog_tail); + + err = test_xdp_devmap_tailcall__load(skel); + if (expect_reject) + ASSERT_ERR(err, "test_xdp_devmap_tailcall__load"); + else + ASSERT_OK(err, "test_xdp_devmap_tailcall__load"); + + test_xdp_devmap_tailcall__destroy(skel); +} + static void test_xdp_with_devmap_frags_helpers(void) { struct test_xdp_with_devmap_frags_helpers *skel; @@ -238,8 +262,13 @@ void serial_test_xdp_devmap_attach(void) if (test__start_subtest("DEVMAP with frags programs in entries")) test_xdp_with_devmap_frags_helpers(); - if (test__start_subtest("Verifier check of DEVMAP programs")) + if (test__start_subtest("Verifier check of DEVMAP programs")) { test_neg_xdp_devmap_helpers(); + test_xdp_devmap_tailcall(BPF_XDP_DEVMAP, BPF_XDP_DEVMAP, false); + test_xdp_devmap_tailcall(0, 0, true); + test_xdp_devmap_tailcall(BPF_XDP_DEVMAP, 0, true); + test_xdp_devmap_tailcall(0, BPF_XDP_DEVMAP, true); + } if (test__start_subtest("DEVMAP with programs in entries on veth")) test_xdp_with_devmap_helpers_veth(); |