Skip to content

L
linux
Commit 6a3b24ca authored by Johan Almbladh's avatar Johan Almbladh Committed by Daniel Borkmann
Browse files
Options

bpf, tests: Add tests for BPF_CMPXCHG 

Tests for BPF_CMPXCHG with both word and double word operands. As with
the tests for other atomic operations, these tests only check the result
of the arithmetic operation. The atomicity of the operations is not tested.
Signed-off-by: default avatarJohan Almbladh <johan.almbladh@anyfinetworks.com>
Signed-off-by: default avatarDaniel Borkmann <daniel@iogearbox.net>
Acked-by: default avatarYonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/bpf/20210809091829.810076-14-johan.almbladh@anyfinetworks.com
parent e4517b36
Hide whitespace changes
Inline Side-by-side
Showing with 166 additions and 0 deletions
lib/test_bpf.c
View file @ 6a3b24ca
......@@ -5690,6 +5690,172 @@ static struct bpf_test tests[] = {
#undef BPF_ATOMIC_OP_TEST2
#undef BPF_ATOMIC_OP_TEST3
#undef BPF_ATOMIC_OP_TEST4
/* BPF_ATOMIC | BPF_W, BPF_CMPXCHG */
{
"BPF_ATOMIC | BPF_W, BPF_CMPXCHG: Test successful return",
.u.insns_int = {
BPF_ST_MEM(BPF_W, R10, -40, 0x01234567),
BPF_ALU32_IMM(BPF_MOV, R0, 0x01234567),
BPF_ALU32_IMM(BPF_MOV, R3, 0x89abcdef),
BPF_ATOMIC_OP(BPF_W, BPF_CMPXCHG, R10, R3, -40),
BPF_EXIT_INSN(),
},
INTERNAL,
{ },
{ { 0, 0x01234567 } },
.stack_depth = 40,
},
{
"BPF_ATOMIC | BPF_W, BPF_CMPXCHG: Test successful store",
.u.insns_int = {
BPF_ST_MEM(BPF_W, R10, -40, 0x01234567),
BPF_ALU32_IMM(BPF_MOV, R0, 0x01234567),
BPF_ALU32_IMM(BPF_MOV, R3, 0x89abcdef),
BPF_ATOMIC_OP(BPF_W, BPF_CMPXCHG, R10, R3, -40),
BPF_LDX_MEM(BPF_W, R0, R10, -40),
BPF_EXIT_INSN(),
},
INTERNAL,
{ },
{ { 0, 0x89abcdef } },
.stack_depth = 40,
},
{
"BPF_ATOMIC | BPF_W, BPF_CMPXCHG: Test failure return",
.u.insns_int = {
BPF_ST_MEM(BPF_W, R10, -40, 0x01234567),
BPF_ALU32_IMM(BPF_MOV, R0, 0x76543210),
BPF_ALU32_IMM(BPF_MOV, R3, 0x89abcdef),
BPF_ATOMIC_OP(BPF_W, BPF_CMPXCHG, R10, R3, -40),
BPF_EXIT_INSN(),
},
INTERNAL,
{ },
{ { 0, 0x01234567 } },
.stack_depth = 40,
},
{
"BPF_ATOMIC | BPF_W, BPF_CMPXCHG: Test failure store",
.u.insns_int = {
BPF_ST_MEM(BPF_W, R10, -40, 0x01234567),
BPF_ALU32_IMM(BPF_MOV, R0, 0x76543210),
BPF_ALU32_IMM(BPF_MOV, R3, 0x89abcdef),
BPF_ATOMIC_OP(BPF_W, BPF_CMPXCHG, R10, R3, -40),
BPF_LDX_MEM(BPF_W, R0, R10, -40),
BPF_EXIT_INSN(),
},
INTERNAL,
{ },
{ { 0, 0x01234567 } },
.stack_depth = 40,
},
{
"BPF_ATOMIC | BPF_W, BPF_CMPXCHG: Test side effects",
.u.insns_int = {
BPF_ST_MEM(BPF_W, R10, -40, 0x01234567),
BPF_ALU32_IMM(BPF_MOV, R0, 0x01234567),
BPF_ALU32_IMM(BPF_MOV, R3, 0x89abcdef),
BPF_ATOMIC_OP(BPF_W, BPF_CMPXCHG, R10, R3, -40),
BPF_ATOMIC_OP(BPF_W, BPF_CMPXCHG, R10, R3, -40),
BPF_ALU32_REG(BPF_MOV, R0, R3),
BPF_EXIT_INSN(),
},
INTERNAL,
{ },
{ { 0, 0x89abcdef } },
.stack_depth = 40,
},
/* BPF_ATOMIC | BPF_DW, BPF_CMPXCHG */
{
"BPF_ATOMIC | BPF_DW, BPF_CMPXCHG: Test successful return",
.u.insns_int = {
BPF_LD_IMM64(R1, 0x0123456789abcdefULL),
BPF_LD_IMM64(R2, 0xfecdba9876543210ULL),
BPF_ALU64_REG(BPF_MOV, R0, R1),
BPF_STX_MEM(BPF_DW, R10, R1, -40),
BPF_ATOMIC_OP(BPF_DW, BPF_CMPXCHG, R10, R2, -40),
BPF_JMP_REG(BPF_JNE, R0, R1, 1),
BPF_ALU64_REG(BPF_SUB, R0, R1),
BPF_EXIT_INSN(),
},
INTERNAL,
{ },
{ { 0, 0 } },
.stack_depth = 40,
},
{
"BPF_ATOMIC | BPF_DW, BPF_CMPXCHG: Test successful store",
.u.insns_int = {
BPF_LD_IMM64(R1, 0x0123456789abcdefULL),
BPF_LD_IMM64(R2, 0xfecdba9876543210ULL),
BPF_ALU64_REG(BPF_MOV, R0, R1),
BPF_STX_MEM(BPF_DW, R10, R0, -40),
BPF_ATOMIC_OP(BPF_DW, BPF_CMPXCHG, R10, R2, -40),
BPF_LDX_MEM(BPF_DW, R0, R10, -40),
BPF_JMP_REG(BPF_JNE, R0, R2, 1),
BPF_ALU64_REG(BPF_SUB, R0, R2),
BPF_EXIT_INSN(),
},
INTERNAL,
{ },
{ { 0, 0 } },
.stack_depth = 40,
},
{
"BPF_ATOMIC | BPF_DW, BPF_CMPXCHG: Test failure return",
.u.insns_int = {
BPF_LD_IMM64(R1, 0x0123456789abcdefULL),
BPF_LD_IMM64(R2, 0xfecdba9876543210ULL),
BPF_ALU64_REG(BPF_MOV, R0, R1),
BPF_ALU64_IMM(BPF_ADD, R0, 1),
BPF_STX_MEM(BPF_DW, R10, R1, -40),
BPF_ATOMIC_OP(BPF_DW, BPF_CMPXCHG, R10, R2, -40),
BPF_JMP_REG(BPF_JNE, R0, R1, 1),
BPF_ALU64_REG(BPF_SUB, R0, R1),
BPF_EXIT_INSN(),
},
INTERNAL,
{ },
{ { 0, 0 } },
.stack_depth = 40,
},
{
"BPF_ATOMIC | BPF_DW, BPF_CMPXCHG: Test failure store",
.u.insns_int = {
BPF_LD_IMM64(R1, 0x0123456789abcdefULL),
BPF_LD_IMM64(R2, 0xfecdba9876543210ULL),
BPF_ALU64_REG(BPF_MOV, R0, R1),
BPF_ALU64_IMM(BPF_ADD, R0, 1),
BPF_STX_MEM(BPF_DW, R10, R1, -40),
BPF_ATOMIC_OP(BPF_DW, BPF_CMPXCHG, R10, R2, -40),
BPF_LDX_MEM(BPF_DW, R0, R10, -40),
BPF_JMP_REG(BPF_JNE, R0, R1, 1),
BPF_ALU64_REG(BPF_SUB, R0, R1),
BPF_EXIT_INSN(),
},
INTERNAL,
{ },
{ { 0, 0 } },
.stack_depth = 40,
},
{
"BPF_ATOMIC | BPF_DW, BPF_CMPXCHG: Test side effects",
.u.insns_int = {
BPF_LD_IMM64(R1, 0x0123456789abcdefULL),
BPF_LD_IMM64(R2, 0xfecdba9876543210ULL),
BPF_ALU64_REG(BPF_MOV, R0, R1),
BPF_STX_MEM(BPF_DW, R10, R1, -40),
BPF_ATOMIC_OP(BPF_DW, BPF_CMPXCHG, R10, R2, -40),
BPF_LD_IMM64(R0, 0xfecdba9876543210ULL),
BPF_JMP_REG(BPF_JNE, R0, R2, 1),
BPF_ALU64_REG(BPF_SUB, R0, R2),
BPF_EXIT_INSN(),
},
INTERNAL,
{ },
{ { 0, 0 } },
.stack_depth = 40,
},
/* BPF_JMP32 | BPF_JEQ | BPF_K */
{
"JMP32_JEQ_K: Small immediate",
......
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment
GitLab Nexedi Edition | About GitLab | About Nexedi | 沪ICP备2021021310号-2 | 沪ICP备2021021310号-7