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authorXi Wang <xi.wang@gmail.com>2015-07-08 21:00:56 (GMT)
committerDavid S. Miller <davem@davemloft.net>2015-07-08 23:19:53 (GMT)
commitba29becd770ffec90f3af896daffac6b9acec608 (patch)
tree96815c89643734aba98bd63bb68454dd92547eab /lib/test_bpf.c
parentca661a28887714ee2ebdcfe9e89fa2528fcbfbbf (diff)
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>
Diffstat (limited to 'lib/test_bpf.c')
-rw-r--r--lib/test_bpf.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/lib/test_bpf.c b/lib/test_bpf.c
index 7f58c73..9198f28 100644
--- a/lib/test_bpf.c
+++ b/lib/test_bpf.c
@@ -3674,6 +3674,9 @@ static struct bpf_test tests[] = {
.u.insns_int = {
BPF_LD_IMM64(R0, 0x0123456789abcdefLL),
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(),
},
INTERNAL,
@@ -3708,6 +3711,9 @@ static struct bpf_test tests[] = {
.u.insns_int = {
BPF_LD_IMM64(R0, 0x0123456789abcdefLL),
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(),
},
INTERNAL,

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