From: Johan Almbladh <johan.almbladh@anyfinetworks.com>
To: ast@kernel.org, daniel@iogearbox.net, andrii@kernel.org
Cc: kafai@fb.com, songliubraving@fb.com, yhs@fb.com,
john.fastabend@gmail.com, kpsingh@kernel.org,
Tony.Ambardar@gmail.com, netdev@vger.kernel.org,
bpf@vger.kernel.org,
Johan Almbladh <johan.almbladh@anyfinetworks.com>
Subject: [PATCH 05/14] bpf/tests: Add more ALU32 tests for BPF_LSH/RSH/ARSH
Date: Wed, 28 Jul 2021 19:04:53 +0200 [thread overview]
Message-ID: <20210728170502.351010-6-johan.almbladh@anyfinetworks.com> (raw)
In-Reply-To: <20210728170502.351010-1-johan.almbladh@anyfinetworks.com>
This patch adds more tests of ALU32 shift operations BPF_LSH and BPF_RSH,
including the special case of a zero immediate. Also add corresponding
BPF_ARSH tests which were missing for ALU32.
Signed-off-by: Johan Almbladh <johan.almbladh@anyfinetworks.com>
---
lib/test_bpf.c | 102 +++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 102 insertions(+)
diff --git a/lib/test_bpf.c b/lib/test_bpf.c
index 67e7de776c12..ef75dbf53ec2 100644
--- a/lib/test_bpf.c
+++ b/lib/test_bpf.c
@@ -4103,6 +4103,18 @@ static struct bpf_test tests[] = {
{ },
{ { 0, 0x80000000 } },
},
+ {
+ "ALU_LSH_X: 0x12345678 << 12 = 0x45678000",
+ .u.insns_int = {
+ BPF_ALU32_IMM(BPF_MOV, R0, 0x12345678),
+ BPF_ALU32_IMM(BPF_MOV, R1, 12),
+ BPF_ALU32_REG(BPF_LSH, R0, R1),
+ BPF_EXIT_INSN(),
+ },
+ INTERNAL,
+ { },
+ { { 0, 0x45678000 } }
+ },
{
"ALU64_LSH_X: 1 << 1 = 2",
.u.insns_int = {
@@ -4150,6 +4162,28 @@ static struct bpf_test tests[] = {
{ },
{ { 0, 0x80000000 } },
},
+ {
+ "ALU_LSH_K: 0x12345678 << 12 = 0x45678000",
+ .u.insns_int = {
+ BPF_ALU32_IMM(BPF_MOV, R0, 0x12345678),
+ BPF_ALU32_IMM(BPF_LSH, R0, 12),
+ BPF_EXIT_INSN(),
+ },
+ INTERNAL,
+ { },
+ { { 0, 0x45678000 } }
+ },
+ {
+ "ALU_LSH_K: 0x12345678 << 0 = 0x12345678",
+ .u.insns_int = {
+ BPF_ALU32_IMM(BPF_MOV, R0, 0x12345678),
+ BPF_ALU32_IMM(BPF_LSH, R0, 0),
+ BPF_EXIT_INSN(),
+ },
+ INTERNAL,
+ { },
+ { { 0, 0x12345678 } }
+ },
{
"ALU64_LSH_K: 1 << 1 = 2",
.u.insns_int = {
@@ -4197,6 +4231,18 @@ static struct bpf_test tests[] = {
{ },
{ { 0, 1 } },
},
+ {
+ "ALU_RSH_X: 0x12345678 >> 20 = 0x123",
+ .u.insns_int = {
+ BPF_ALU32_IMM(BPF_MOV, R0, 0x12345678),
+ BPF_ALU32_IMM(BPF_MOV, R1, 20),
+ BPF_ALU32_REG(BPF_RSH, R0, R1),
+ BPF_EXIT_INSN(),
+ },
+ INTERNAL,
+ { },
+ { { 0, 0x123 } }
+ },
{
"ALU64_RSH_X: 2 >> 1 = 1",
.u.insns_int = {
@@ -4244,6 +4290,28 @@ static struct bpf_test tests[] = {
{ },
{ { 0, 1 } },
},
+ {
+ "ALU_RSH_K: 0x12345678 >> 20 = 0x123",
+ .u.insns_int = {
+ BPF_ALU32_IMM(BPF_MOV, R0, 0x12345678),
+ BPF_ALU32_IMM(BPF_RSH, R0, 20),
+ BPF_EXIT_INSN(),
+ },
+ INTERNAL,
+ { },
+ { { 0, 0x123 } }
+ },
+ {
+ "ALU_RSH_K: 0x12345678 >> 0 = 0x12345678",
+ .u.insns_int = {
+ BPF_ALU32_IMM(BPF_MOV, R0, 0x12345678),
+ BPF_ALU32_IMM(BPF_RSH, R0, 0),
+ BPF_EXIT_INSN(),
+ },
+ INTERNAL,
+ { },
+ { { 0, 0x12345678 } }
+ },
{
"ALU64_RSH_K: 2 >> 1 = 1",
.u.insns_int = {
@@ -4267,6 +4335,18 @@ static struct bpf_test tests[] = {
{ { 0, 1 } },
},
/* BPF_ALU | BPF_ARSH | BPF_X */
+ {
+ "ALU32_ARSH_X: -1234 >> 7 = -10",
+ .u.insns_int = {
+ BPF_ALU32_IMM(BPF_MOV, R0, -1234),
+ BPF_ALU32_IMM(BPF_MOV, R1, 7),
+ BPF_ALU32_REG(BPF_ARSH, R0, R1),
+ BPF_EXIT_INSN(),
+ },
+ INTERNAL,
+ { },
+ { { 0, -10 } }
+ },
{
"ALU_ARSH_X: 0xff00ff0000000000 >> 40 = 0xffffffffffff00ff",
.u.insns_int = {
@@ -4280,6 +4360,28 @@ static struct bpf_test tests[] = {
{ { 0, 0xffff00ff } },
},
/* BPF_ALU | BPF_ARSH | BPF_K */
+ {
+ "ALU32_ARSH_K: -1234 >> 7 = -10",
+ .u.insns_int = {
+ BPF_ALU32_IMM(BPF_MOV, R0, -1234),
+ BPF_ALU32_IMM(BPF_ARSH, R0, 7),
+ BPF_EXIT_INSN(),
+ },
+ INTERNAL,
+ { },
+ { { 0, -10 } }
+ },
+ {
+ "ALU32_ARSH_K: -1234 >> 0 = -1234",
+ .u.insns_int = {
+ BPF_ALU32_IMM(BPF_MOV, R0, -1234),
+ BPF_ALU32_IMM(BPF_ARSH, R0, 0),
+ BPF_EXIT_INSN(),
+ },
+ INTERNAL,
+ { },
+ { { 0, -1234 } }
+ },
{
"ALU_ARSH_K: 0xff00ff0000000000 >> 40 = 0xffffffffffff00ff",
.u.insns_int = {
--
2.25.1
next prev parent reply other threads:[~2021-07-28 17:05 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-28 17:04 [PATCH 00/14] bpf/tests: Extend the eBPF test suite Johan Almbladh
2021-07-28 17:04 ` [PATCH 01/14] bpf/tests: Add BPF_JMP32 test cases Johan Almbladh
2021-07-28 22:31 ` Yonghong Song
2021-07-29 21:30 ` Johan Almbladh
2021-07-28 17:04 ` [PATCH 02/14] bpf/tests: Add BPF_MOV tests for zero and sign extension Johan Almbladh
2021-07-28 22:36 ` Yonghong Song
2021-07-28 17:04 ` [PATCH 03/14] bpf/tests: Fix typos in test case descriptions Johan Almbladh
2021-07-28 22:43 ` Yonghong Song
2021-07-28 17:04 ` [PATCH 04/14] bpf/tests: Add more tests of ALU32 and ALU64 bitwise operations Johan Almbladh
2021-07-28 22:53 ` Yonghong Song
2021-07-28 17:04 ` Johan Almbladh [this message]
2021-07-28 22:57 ` [PATCH 05/14] bpf/tests: Add more ALU32 tests for BPF_LSH/RSH/ARSH Yonghong Song
2021-07-28 17:04 ` [PATCH 06/14] bpf/tests: Add more BPF_LSH/RSH/ARSH tests for ALU64 Johan Almbladh
2021-07-28 23:30 ` Yonghong Song
2021-07-29 12:34 ` Johan Almbladh
2021-07-29 15:39 ` Yonghong Song
2021-07-28 17:04 ` [PATCH 07/14] bpf/tests: Add more ALU64 BPF_MUL tests Johan Almbladh
2021-07-28 23:32 ` Yonghong Song
2021-07-29 21:21 ` Johan Almbladh
2021-07-28 17:04 ` [PATCH 08/14] bpf/tests: Add tests for ALU operations implemented with function calls Johan Almbladh
2021-07-28 23:52 ` Yonghong Song
2021-07-29 21:17 ` Johan Almbladh
2021-07-29 22:54 ` Yonghong Song
2021-07-28 17:04 ` [PATCH 09/14] bpf/tests: Add word-order tests for load/store of double words Johan Almbladh
2021-07-28 23:54 ` Yonghong Song
2021-07-28 17:04 ` [PATCH 10/14] bpf/tests: Add branch conversion JIT test Johan Almbladh
2021-07-28 23:58 ` Yonghong Song
2021-07-29 12:45 ` Johan Almbladh
2021-07-29 15:46 ` Yonghong Song
2021-07-29 0:55 ` Yonghong Song
2021-07-29 13:24 ` Johan Almbladh
2021-07-29 15:50 ` Yonghong Song
2021-07-28 17:04 ` [PATCH 11/14] bpf/tests: Add test for 32-bit context pointer argument passing Johan Almbladh
2021-07-29 0:09 ` Yonghong Song
2021-07-29 13:29 ` Johan Almbladh
2021-07-29 15:50 ` Yonghong Song
2021-07-28 17:05 ` [PATCH 12/14] bpf/tests: Add tests for atomic operations Johan Almbladh
2021-07-29 0:36 ` Yonghong Song
2021-07-28 17:05 ` [PATCH 13/14] bpf/tests: Add tests for BPF_CMPXCHG Johan Almbladh
2021-07-29 0:45 ` Yonghong Song
2021-07-28 17:05 ` [PATCH 14/14] bpf/tests: Add tail call test suite Johan Almbladh
2021-07-29 2:56 ` Yonghong Song
2021-07-29 20:44 ` Johan Almbladh
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