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test_bpf: extend tests for 32-bit endianness conversion 

Currently "ALU_END_FROM_BE 32" and "ALU_END_FROM_LE 32" do not test if
the upper bits of the result are zeros (the arm64 JIT had such bugs).
Extend the two tests to catch this.

Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: Xi Wang <xi.wang@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Xi Wang 2015-07-08 14:00:56 -07:00 committed by David S. Miller
parent ca661a2888
commit ba29becd77
1 changed files with 6 additions and 0 deletions
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6
lib/test_bpf.c
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@ -3674,6 +3674,9 @@ static struct bpf_test tests[] = {
.u.insns_int = { .u.insns_int = {
BPF_LD_IMM64(R0, 0x0123456789abcdefLL), BPF_LD_IMM64(R0, 0x0123456789abcdefLL),
BPF_ENDIAN(BPF_FROM_BE, R0, 32), BPF_ENDIAN(BPF_FROM_BE, R0, 32),
BPF_ALU64_REG(BPF_MOV, R1, R0),
BPF_ALU64_IMM(BPF_RSH, R1, 32),
BPF_ALU32_REG(BPF_ADD, R0, R1), /* R1 = 0 */
BPF_EXIT_INSN(), BPF_EXIT_INSN(),
}, },
INTERNAL, INTERNAL,
@ -3708,6 +3711,9 @@ static struct bpf_test tests[] = {
.u.insns_int = { .u.insns_int = {
BPF_LD_IMM64(R0, 0x0123456789abcdefLL), BPF_LD_IMM64(R0, 0x0123456789abcdefLL),
BPF_ENDIAN(BPF_FROM_LE, R0, 32), BPF_ENDIAN(BPF_FROM_LE, R0, 32),
BPF_ALU64_REG(BPF_MOV, R1, R0),
BPF_ALU64_IMM(BPF_RSH, R1, 32),
BPF_ALU32_REG(BPF_ADD, R0, R1), /* R1 = 0 */
BPF_EXIT_INSN(), BPF_EXIT_INSN(),
}, },
INTERNAL, INTERNAL,