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authorDaniel Borkmann <daniel@iogearbox.net>2015-05-13 13:12:43 +0200
committerDavid S. Miller <davem@davemloft.net>2015-05-14 22:34:10 -0400
commita4afd37b26f4b9f640310a89b7f8d176ae3460b1 (patch)
tree334e71c4cb84bbf3b2a6ccb117b9d4a685307751 /include/linux/filter.h
parent264ea103a7473f51aced838e68ed384ea2c759f5 (diff)
test_bpf: add tests related to BPF_MAXINSNS
Couple of torture test cases related to the bug fixed in 0b59d8806a31 ("ARM: net: delegate filter to kernel interpreter when imm_offset() return value can't fit into 12bits."). I've added a helper to allocate and fill the insn space. Output on x86_64 from my laptop: test_bpf: #233 BPF_MAXINSNS: Maximum possible literals jited:0 7 PASS test_bpf: #234 BPF_MAXINSNS: Single literal jited:0 8 PASS test_bpf: #235 BPF_MAXINSNS: Run/add until end jited:0 11553 PASS test_bpf: #236 BPF_MAXINSNS: Too many instructions PASS test_bpf: #237 BPF_MAXINSNS: Very long jump jited:0 9 PASS test_bpf: #238 BPF_MAXINSNS: Ctx heavy transformations jited:0 20329 20398 PASS test_bpf: #239 BPF_MAXINSNS: Call heavy transformations jited:0 32178 32475 PASS test_bpf: #240 BPF_MAXINSNS: Jump heavy test jited:0 10518 PASS test_bpf: #233 BPF_MAXINSNS: Maximum possible literals jited:1 4 PASS test_bpf: #234 BPF_MAXINSNS: Single literal jited:1 4 PASS test_bpf: #235 BPF_MAXINSNS: Run/add until end jited:1 1625 PASS test_bpf: #236 BPF_MAXINSNS: Too many instructions PASS test_bpf: #237 BPF_MAXINSNS: Very long jump jited:1 8 PASS test_bpf: #238 BPF_MAXINSNS: Ctx heavy transformations jited:1 3301 3174 PASS test_bpf: #239 BPF_MAXINSNS: Call heavy transformations jited:1 24107 23491 PASS test_bpf: #240 BPF_MAXINSNS: Jump heavy test jited:1 8651 PASS Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Cc: Alexei Starovoitov <ast@plumgrid.com> Cc: Nicolas Schichan <nschichan@freebox.fr> Acked-by: Alexei Starovoitov <ast@plumgrid.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/filter.h')
-rw-r--r--include/linux/filter.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/filter.h b/include/linux/filter.h
index ce1d72d34382..200be4a74a33 100644
--- a/include/linux/filter.h
+++ b/include/linux/filter.h
@@ -277,6 +277,14 @@ struct bpf_prog_aux;
.off = 0, \
.imm = 0 })
+/* Internal classic blocks for direct assignment */
+
+#define __BPF_STMT(CODE, K) \
+ ((struct sock_filter) BPF_STMT(CODE, K))
+
+#define __BPF_JUMP(CODE, K, JT, JF) \
+ ((struct sock_filter) BPF_JUMP(CODE, K, JT, JF))
+
#define bytes_to_bpf_size(bytes) \
({ \
int bpf_size = -EINVAL; \