[SRU][Bionic][PATCH 1/1] test_bpf: flag tests that cannot be jited on s390

[Kleber Sacilotto de Souza]

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 at canonical.com>
Acked-by: Song Liu <songliubraving at fb.com>
Signed-off-by: Daniel Borkmann <daniel at 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 at canonical.com>
---
 lib/test_bpf.c | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/lib/test_bpf.c b/lib/test_bpf.c
index 59359aad645d..1fe4d4b33217 100644
--- 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
 	 */
-- 
2.17.1