test_bpf: flag tests that cannot be jited on s390

BugLink: https://bugs.launchpad.net/bugs/1753941
Flag with FLAG_EXPECTED_FAIL the BPF_MAXINSNS tests that cannot be jited
on s390 because they exceed BPF_SIZE_MAX and fail when
CONFIG_BPF_JIT_ALWAYS_ON is set. Also set .expected_errcode to -ENOTSUPP
so the tests pass in that case.

Signed-off-by: Kleber Sacilotto de Souza <kleber.souza@canonical.com>
Acked-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
(backported from commit 3203c9010060806ff88c9989aeab4dc8d9a474dc)
[ klebers: compile out for s390 also the testcases:
  - BPF_MAXINSNS: ld_abs+vlan_push/pop
  - BPF_MAXINSNS: jump around ld_abs ]
Signed-off-by: Kleber Sacilotto de Souza <kleber.souza@canonical.com>
Acked-by: Stefan Bader <stefan.bader@canonical.com>
Acked-by: Thadeu Lima de Souza Cascardo <cascardo@canonical.com>
Signed-off-by: Kleber Sacilotto de Souza <kleber.souza@canonical.com>

diff --git a/lib/test_bpf.c b/lib/test_bpf.c
index 59359aad645db1d6703bc4f410532956bfa051e7..1fe4d4b33217f6ef478986e6edb5fc547600fd37 100644 (file)
--- a/lib/test_bpf.c
+++ b/lib/test_bpf.c
@@ -5419,21 +5419,31 @@ static struct bpf_test tests[] = {
        {       /* Mainly checking JIT here. */
                "BPF_MAXINSNS: Ctx heavy transformations",
                { },
+#if defined(CONFIG_BPF_JIT_ALWAYS_ON) && defined(CONFIG_S390)
+               CLASSIC | FLAG_EXPECTED_FAIL,
+#else
                CLASSIC,
+#endif
                { },
                {
                        {  1, !!(SKB_VLAN_TCI & VLAN_TAG_PRESENT) },
                        { 10, !!(SKB_VLAN_TCI & VLAN_TAG_PRESENT) }
                },
                .fill_helper = bpf_fill_maxinsns6,
+               .expected_errcode = -ENOTSUPP,
        },
        {       /* Mainly checking JIT here. */
                "BPF_MAXINSNS: Call heavy transformations",
                { },
+#if defined(CONFIG_BPF_JIT_ALWAYS_ON) && defined(CONFIG_S390)
+               CLASSIC | FLAG_NO_DATA | FLAG_EXPECTED_FAIL,
+#else
                CLASSIC | FLAG_NO_DATA,
+#endif
                { },
                { { 1, 0 }, { 10, 0 } },
                .fill_helper = bpf_fill_maxinsns7,
+               .expected_errcode = -ENOTSUPP,
        },
        {       /* Mainly checking JIT here. */
                "BPF_MAXINSNS: Jump heavy test",
@@ -5475,11 +5485,17 @@ static struct bpf_test tests[] = {
        {
                "BPF_MAXINSNS: ld_abs+get_processor_id",
                { },
+#if defined(CONFIG_BPF_JIT_ALWAYS_ON) && defined(CONFIG_S390)
+               CLASSIC | FLAG_EXPECTED_FAIL,
+#else
                CLASSIC,
+#endif
                { },
                { { 1, 0xbee } },
                .fill_helper = bpf_fill_ld_abs_get_processor_id,
+               .expected_errcode = -ENOTSUPP,
        },
+#if !(defined(CONFIG_BPF_JIT_ALWAYS_ON) && defined(CONFIG_S390))
        {
                "BPF_MAXINSNS: ld_abs+vlan_push/pop",
                { },
@@ -5496,6 +5512,7 @@ static struct bpf_test tests[] = {
                { { 2, 10 } },
                .fill_helper = bpf_fill_jump_around_ld_abs,
        },
+#endif
        /*
         * LD_IND / LD_ABS on fragmented SKBs
         */