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| author | Yang Shi <yang.shi@linaro.org> | 2015-11-04 11:36:37 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-11-05 00:05:50 -0500 |
| commit | d4e4bc16102cb1338be9c75f797156718f8a806d (patch) | |
| tree | 5ed4509112b36cb1e79c3a91affebc688d89cd9a /lib/test_bpf.c | |
| parent | df761ea1f39fe1c020c31327656bce7a5a406201 (diff) | |
| download | lwn-d4e4bc16102cb1338be9c75f797156718f8a806d.tar.gz lwn-d4e4bc16102cb1338be9c75f797156718f8a806d.zip | |
bpf: add mod default A and X test cases
When running "mod X" operation, if X is 0 the filter has to be halt.
Add new test cases to cover A = A mod X if X is 0, and A = A mod 1.
CC: Xi Wang <xi.wang@gmail.com>
CC: Zi Shen Lim <zlim.lnx@gmail.com>
Signed-off-by: Yang Shi <yang.shi@linaro.org>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Zi Shen Lim <zlim.lnx@gmail.com>
Acked-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.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/lib/test_bpf.c b/lib/test_bpf.c index d1377390b3ad..10cd1860e5b0 100644 --- a/lib/test_bpf.c +++ b/lib/test_bpf.c @@ -5056,6 +5056,36 @@ static struct bpf_test tests[] = { { {0x1, 0x0 } }, }, { + "MOD default X", + .u.insns = { + /* + * A = 0x42 + * A = A mod X ; this halt the filter execution if X is 0 + * ret 0x42 + */ + BPF_STMT(BPF_LD | BPF_IMM, 0x42), + BPF_STMT(BPF_ALU | BPF_MOD | BPF_X, 0), + BPF_STMT(BPF_RET | BPF_K, 0x42), + }, + CLASSIC | FLAG_NO_DATA, + {}, + { {0x1, 0x0 } }, + }, + { + "MOD default A", + .u.insns = { + /* + * A = A mod 1 + * ret A + */ + BPF_STMT(BPF_ALU | BPF_MOD | BPF_K, 0x1), + BPF_STMT(BPF_RET | BPF_A, 0x0), + }, + CLASSIC | FLAG_NO_DATA, + {}, + { {0x1, 0x0 } }, + }, + { "JMP EQ default A", .u.insns = { /* |