* [PATCH net-next 1/5] net: filter: remove DL macro
2014-05-23 16:43 [PATCH net-next 0/5] BPF updates Daniel Borkmann
@ 2014-05-23 16:43 ` Daniel Borkmann
2014-05-23 16:43 ` [PATCH net-next 2/5] net: filter: let unattached filters use sock_fprog_kern Daniel Borkmann
` (3 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: Daniel Borkmann @ 2014-05-23 16:43 UTC (permalink / raw)
To: davem; +Cc: ast, netdev
Lets get rid of this macro. After commit 5bcfedf06f7f ("net: filter:
simplify label names from jump-table"), labels have become more
readable due to omission of BPF_ prefix but at the same time more
generic, so that things like `git grep -n` would not find them. As
a middle path, lets get rid of the DL macro as it's not strictly
needed and would otherwise just hide the full name.
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Acked-by: Alexei Starovoitov <ast@plumgrid.com>
---
include/linux/filter.h | 3 -
net/core/filter.c | 193 +++++++++++++++++++++++++------------------------
2 files changed, 99 insertions(+), 97 deletions(-)
diff --git a/include/linux/filter.h b/include/linux/filter.h
index 7977b39..2b0056a 100644
--- a/include/linux/filter.h
+++ b/include/linux/filter.h
@@ -37,9 +37,6 @@
#define BPF_CALL 0x80 /* function call */
#define BPF_EXIT 0x90 /* function return */
-/* Placeholder/dummy for 0 */
-#define BPF_0 0
-
/* Register numbers */
enum {
BPF_REG_0 = 0,
diff --git a/net/core/filter.c b/net/core/filter.c
index 7067cb2..b3b0889 100644
--- a/net/core/filter.c
+++ b/net/core/filter.c
@@ -160,95 +160,100 @@ static unsigned int __sk_run_filter(void *ctx, const struct sock_filter_int *ins
static const void *jumptable[256] = {
[0 ... 255] = &&default_label,
/* Now overwrite non-defaults ... */
-#define DL(A, B, C) [BPF_##A|BPF_##B|BPF_##C] = &&A##_##B##_##C
- DL(ALU, ADD, X),
- DL(ALU, ADD, K),
- DL(ALU, SUB, X),
- DL(ALU, SUB, K),
- DL(ALU, AND, X),
- DL(ALU, AND, K),
- DL(ALU, OR, X),
- DL(ALU, OR, K),
- DL(ALU, LSH, X),
- DL(ALU, LSH, K),
- DL(ALU, RSH, X),
- DL(ALU, RSH, K),
- DL(ALU, XOR, X),
- DL(ALU, XOR, K),
- DL(ALU, MUL, X),
- DL(ALU, MUL, K),
- DL(ALU, MOV, X),
- DL(ALU, MOV, K),
- DL(ALU, DIV, X),
- DL(ALU, DIV, K),
- DL(ALU, MOD, X),
- DL(ALU, MOD, K),
- DL(ALU, NEG, 0),
- DL(ALU, END, TO_BE),
- DL(ALU, END, TO_LE),
- DL(ALU64, ADD, X),
- DL(ALU64, ADD, K),
- DL(ALU64, SUB, X),
- DL(ALU64, SUB, K),
- DL(ALU64, AND, X),
- DL(ALU64, AND, K),
- DL(ALU64, OR, X),
- DL(ALU64, OR, K),
- DL(ALU64, LSH, X),
- DL(ALU64, LSH, K),
- DL(ALU64, RSH, X),
- DL(ALU64, RSH, K),
- DL(ALU64, XOR, X),
- DL(ALU64, XOR, K),
- DL(ALU64, MUL, X),
- DL(ALU64, MUL, K),
- DL(ALU64, MOV, X),
- DL(ALU64, MOV, K),
- DL(ALU64, ARSH, X),
- DL(ALU64, ARSH, K),
- DL(ALU64, DIV, X),
- DL(ALU64, DIV, K),
- DL(ALU64, MOD, X),
- DL(ALU64, MOD, K),
- DL(ALU64, NEG, 0),
- DL(JMP, CALL, 0),
- DL(JMP, JA, 0),
- DL(JMP, JEQ, X),
- DL(JMP, JEQ, K),
- DL(JMP, JNE, X),
- DL(JMP, JNE, K),
- DL(JMP, JGT, X),
- DL(JMP, JGT, K),
- DL(JMP, JGE, X),
- DL(JMP, JGE, K),
- DL(JMP, JSGT, X),
- DL(JMP, JSGT, K),
- DL(JMP, JSGE, X),
- DL(JMP, JSGE, K),
- DL(JMP, JSET, X),
- DL(JMP, JSET, K),
- DL(JMP, EXIT, 0),
- DL(STX, MEM, B),
- DL(STX, MEM, H),
- DL(STX, MEM, W),
- DL(STX, MEM, DW),
- DL(STX, XADD, W),
- DL(STX, XADD, DW),
- DL(ST, MEM, B),
- DL(ST, MEM, H),
- DL(ST, MEM, W),
- DL(ST, MEM, DW),
- DL(LDX, MEM, B),
- DL(LDX, MEM, H),
- DL(LDX, MEM, W),
- DL(LDX, MEM, DW),
- DL(LD, ABS, W),
- DL(LD, ABS, H),
- DL(LD, ABS, B),
- DL(LD, IND, W),
- DL(LD, IND, H),
- DL(LD, IND, B),
-#undef DL
+ /* 32 bit ALU operations */
+ [BPF_ALU | BPF_ADD | BPF_X] = &&ALU_ADD_X,
+ [BPF_ALU | BPF_ADD | BPF_K] = &&ALU_ADD_K,
+ [BPF_ALU | BPF_SUB | BPF_X] = &&ALU_SUB_X,
+ [BPF_ALU | BPF_SUB | BPF_K] = &&ALU_SUB_K,
+ [BPF_ALU | BPF_AND | BPF_X] = &&ALU_AND_X,
+ [BPF_ALU | BPF_AND | BPF_K] = &&ALU_AND_K,
+ [BPF_ALU | BPF_OR | BPF_X] = &&ALU_OR_X,
+ [BPF_ALU | BPF_OR | BPF_K] = &&ALU_OR_K,
+ [BPF_ALU | BPF_LSH | BPF_X] = &&ALU_LSH_X,
+ [BPF_ALU | BPF_LSH | BPF_K] = &&ALU_LSH_K,
+ [BPF_ALU | BPF_RSH | BPF_X] = &&ALU_RSH_X,
+ [BPF_ALU | BPF_RSH | BPF_K] = &&ALU_RSH_K,
+ [BPF_ALU | BPF_XOR | BPF_X] = &&ALU_XOR_X,
+ [BPF_ALU | BPF_XOR | BPF_K] = &&ALU_XOR_K,
+ [BPF_ALU | BPF_MUL | BPF_X] = &&ALU_MUL_X,
+ [BPF_ALU | BPF_MUL | BPF_K] = &&ALU_MUL_K,
+ [BPF_ALU | BPF_MOV | BPF_X] = &&ALU_MOV_X,
+ [BPF_ALU | BPF_MOV | BPF_K] = &&ALU_MOV_K,
+ [BPF_ALU | BPF_DIV | BPF_X] = &&ALU_DIV_X,
+ [BPF_ALU | BPF_DIV | BPF_K] = &&ALU_DIV_K,
+ [BPF_ALU | BPF_MOD | BPF_X] = &&ALU_MOD_X,
+ [BPF_ALU | BPF_MOD | BPF_K] = &&ALU_MOD_K,
+ [BPF_ALU | BPF_NEG] = &&ALU_NEG,
+ [BPF_ALU | BPF_END | BPF_TO_BE] = &&ALU_END_TO_BE,
+ [BPF_ALU | BPF_END | BPF_TO_LE] = &&ALU_END_TO_LE,
+ /* 64 bit ALU operations */
+ [BPF_ALU64 | BPF_ADD | BPF_X] = &&ALU64_ADD_X,
+ [BPF_ALU64 | BPF_ADD | BPF_K] = &&ALU64_ADD_K,
+ [BPF_ALU64 | BPF_SUB | BPF_X] = &&ALU64_SUB_X,
+ [BPF_ALU64 | BPF_SUB | BPF_K] = &&ALU64_SUB_K,
+ [BPF_ALU64 | BPF_AND | BPF_X] = &&ALU64_AND_X,
+ [BPF_ALU64 | BPF_AND | BPF_K] = &&ALU64_AND_K,
+ [BPF_ALU64 | BPF_OR | BPF_X] = &&ALU64_OR_X,
+ [BPF_ALU64 | BPF_OR | BPF_K] = &&ALU64_OR_K,
+ [BPF_ALU64 | BPF_LSH | BPF_X] = &&ALU64_LSH_X,
+ [BPF_ALU64 | BPF_LSH | BPF_K] = &&ALU64_LSH_K,
+ [BPF_ALU64 | BPF_RSH | BPF_X] = &&ALU64_RSH_X,
+ [BPF_ALU64 | BPF_RSH | BPF_K] = &&ALU64_RSH_K,
+ [BPF_ALU64 | BPF_XOR | BPF_X] = &&ALU64_XOR_X,
+ [BPF_ALU64 | BPF_XOR | BPF_K] = &&ALU64_XOR_K,
+ [BPF_ALU64 | BPF_MUL | BPF_X] = &&ALU64_MUL_X,
+ [BPF_ALU64 | BPF_MUL | BPF_K] = &&ALU64_MUL_K,
+ [BPF_ALU64 | BPF_MOV | BPF_X] = &&ALU64_MOV_X,
+ [BPF_ALU64 | BPF_MOV | BPF_K] = &&ALU64_MOV_K,
+ [BPF_ALU64 | BPF_ARSH | BPF_X] = &&ALU64_ARSH_X,
+ [BPF_ALU64 | BPF_ARSH | BPF_K] = &&ALU64_ARSH_K,
+ [BPF_ALU64 | BPF_DIV | BPF_X] = &&ALU64_DIV_X,
+ [BPF_ALU64 | BPF_DIV | BPF_K] = &&ALU64_DIV_K,
+ [BPF_ALU64 | BPF_MOD | BPF_X] = &&ALU64_MOD_X,
+ [BPF_ALU64 | BPF_MOD | BPF_K] = &&ALU64_MOD_K,
+ [BPF_ALU64 | BPF_NEG] = &&ALU64_NEG,
+ /* Call instruction */
+ [BPF_JMP | BPF_CALL] = &&JMP_CALL,
+ /* Jumps */
+ [BPF_JMP | BPF_JA] = &&JMP_JA,
+ [BPF_JMP | BPF_JEQ | BPF_X] = &&JMP_JEQ_X,
+ [BPF_JMP | BPF_JEQ | BPF_K] = &&JMP_JEQ_K,
+ [BPF_JMP | BPF_JNE | BPF_X] = &&JMP_JNE_X,
+ [BPF_JMP | BPF_JNE | BPF_K] = &&JMP_JNE_K,
+ [BPF_JMP | BPF_JGT | BPF_X] = &&JMP_JGT_X,
+ [BPF_JMP | BPF_JGT | BPF_K] = &&JMP_JGT_K,
+ [BPF_JMP | BPF_JGE | BPF_X] = &&JMP_JGE_X,
+ [BPF_JMP | BPF_JGE | BPF_K] = &&JMP_JGE_K,
+ [BPF_JMP | BPF_JSGT | BPF_X] = &&JMP_JSGT_X,
+ [BPF_JMP | BPF_JSGT | BPF_K] = &&JMP_JSGT_K,
+ [BPF_JMP | BPF_JSGE | BPF_X] = &&JMP_JSGE_X,
+ [BPF_JMP | BPF_JSGE | BPF_K] = &&JMP_JSGE_K,
+ [BPF_JMP | BPF_JSET | BPF_X] = &&JMP_JSET_X,
+ [BPF_JMP | BPF_JSET | BPF_K] = &&JMP_JSET_K,
+ /* Program return */
+ [BPF_JMP | BPF_EXIT] = &&JMP_EXIT,
+ /* Store instructions */
+ [BPF_STX | BPF_MEM | BPF_B] = &&STX_MEM_B,
+ [BPF_STX | BPF_MEM | BPF_H] = &&STX_MEM_H,
+ [BPF_STX | BPF_MEM | BPF_W] = &&STX_MEM_W,
+ [BPF_STX | BPF_MEM | BPF_DW] = &&STX_MEM_DW,
+ [BPF_STX | BPF_XADD | BPF_W] = &&STX_XADD_W,
+ [BPF_STX | BPF_XADD | BPF_DW] = &&STX_XADD_DW,
+ [BPF_ST | BPF_MEM | BPF_B] = &&ST_MEM_B,
+ [BPF_ST | BPF_MEM | BPF_H] = &&ST_MEM_H,
+ [BPF_ST | BPF_MEM | BPF_W] = &&ST_MEM_W,
+ [BPF_ST | BPF_MEM | BPF_DW] = &&ST_MEM_DW,
+ /* Load instructions */
+ [BPF_LDX | BPF_MEM | BPF_B] = &&LDX_MEM_B,
+ [BPF_LDX | BPF_MEM | BPF_H] = &&LDX_MEM_H,
+ [BPF_LDX | BPF_MEM | BPF_W] = &&LDX_MEM_W,
+ [BPF_LDX | BPF_MEM | BPF_DW] = &&LDX_MEM_DW,
+ [BPF_LD | BPF_ABS | BPF_W] = &&LD_ABS_W,
+ [BPF_LD | BPF_ABS | BPF_H] = &&LD_ABS_H,
+ [BPF_LD | BPF_ABS | BPF_B] = &&LD_ABS_B,
+ [BPF_LD | BPF_IND | BPF_W] = &&LD_IND_W,
+ [BPF_LD | BPF_IND | BPF_H] = &&LD_IND_H,
+ [BPF_LD | BPF_IND | BPF_B] = &&LD_IND_B,
};
void *ptr;
int off;
@@ -290,10 +295,10 @@ select_insn:
ALU(XOR, ^)
ALU(MUL, *)
#undef ALU
- ALU_NEG_0:
+ ALU_NEG:
A = (u32) -A;
CONT;
- ALU64_NEG_0:
+ ALU64_NEG:
A = -A;
CONT;
ALU_MOV_X:
@@ -382,7 +387,7 @@ select_insn:
CONT;
/* CALL */
- JMP_CALL_0:
+ JMP_CALL:
/* Function call scratches BPF_R1-BPF_R5 registers,
* preserves BPF_R6-BPF_R9, and stores return value
* into BPF_R0.
@@ -392,7 +397,7 @@ select_insn:
CONT;
/* JMP */
- JMP_JA_0:
+ JMP_JA:
insn += insn->off;
CONT;
JMP_JEQ_X:
@@ -479,7 +484,7 @@ select_insn:
CONT_JMP;
}
CONT;
- JMP_EXIT_0:
+ JMP_EXIT:
return BPF_R0;
/* STX and ST and LDX*/
--
1.7.11.7
^ permalink raw reply related [flat|nested] 6+ messages in thread* [PATCH net-next 4/5] net: filter: improve test case framework
2014-05-23 16:43 [PATCH net-next 0/5] BPF updates Daniel Borkmann
` (2 preceding siblings ...)
2014-05-23 16:43 ` [PATCH net-next 3/5] net: filter: doc: add section for BPF test suite Daniel Borkmann
@ 2014-05-23 16:44 ` Daniel Borkmann
2014-05-23 16:44 ` [PATCH net-next 5/5] net: filter: add test case for jump with holes and ret x variants Daniel Borkmann
4 siblings, 0 replies; 6+ messages in thread
From: Daniel Borkmann @ 2014-05-23 16:44 UTC (permalink / raw)
To: davem; +Cc: ast, netdev
This patch simplifies and refactors the test case code a
bit and also adds a summary of all test that passed or
failed in the kernel log, so that it's easier to spot if
something has failed.
Future work could further extend the test framework to also
support different input 'stimuli' i.e. related structures
to seccomp.
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Acked-by: Alexei Starovoitov <ast@plumgrid.com>
---
lib/test_bpf.c | 388 ++++++++++++++++++++++++++++++++++-----------------------
1 file changed, 233 insertions(+), 155 deletions(-)
diff --git a/lib/test_bpf.c b/lib/test_bpf.c
index e03991e..da34e33 100644
--- a/lib/test_bpf.c
+++ b/lib/test_bpf.c
@@ -22,12 +22,14 @@
#include <linux/netdevice.h>
#include <linux/if_vlan.h>
+/* General test specific settings */
#define MAX_SUBTESTS 3
+#define MAX_TESTRUNS 10000
#define MAX_DATA 128
#define MAX_INSNS 512
#define MAX_K 0xffffFFFF
-/* define few constants used to init test 'skb' */
+/* Few constants used to init test 'skb' */
#define SKB_TYPE 3
#define SKB_MARK 0x1234aaaa
#define SKB_HASH 0x1234aaab
@@ -36,18 +38,29 @@
#define SKB_DEV_IFINDEX 577
#define SKB_DEV_TYPE 588
-/* redefine REGs to make tests less verbose */
-#define R0 BPF_REG_0
-#define R1 BPF_REG_1
-#define R2 BPF_REG_2
-#define R3 BPF_REG_3
-#define R4 BPF_REG_4
-#define R5 BPF_REG_5
-#define R6 BPF_REG_6
-#define R7 BPF_REG_7
-#define R8 BPF_REG_8
-#define R9 BPF_REG_9
-#define R10 BPF_REG_10
+/* Redefine REGs to make tests less verbose */
+#define R0 BPF_REG_0
+#define R1 BPF_REG_1
+#define R2 BPF_REG_2
+#define R3 BPF_REG_3
+#define R4 BPF_REG_4
+#define R5 BPF_REG_5
+#define R6 BPF_REG_6
+#define R7 BPF_REG_7
+#define R8 BPF_REG_8
+#define R9 BPF_REG_9
+#define R10 BPF_REG_10
+
+/* Flags that can be passed to test cases */
+#define FLAG_NO_DATA BIT(0)
+#define FLAG_EXPECTED_FAIL BIT(1)
+
+enum {
+ CLASSIC = BIT(6), /* Old BPF instructions only. */
+ INTERNAL = BIT(7), /* Extended instruction set. */
+};
+
+#define TEST_TYPE_MASK (CLASSIC | INTERNAL)
struct bpf_test {
const char *descr;
@@ -55,12 +68,7 @@ struct bpf_test {
struct sock_filter insns[MAX_INSNS];
struct sock_filter_int insns_int[MAX_INSNS];
} u;
- enum {
- NO_DATA,
- EXPECTED_FAIL,
- SKB,
- SKB_INT
- } data_type;
+ __u8 aux;
__u8 data[MAX_DATA];
struct {
int data_size;
@@ -84,7 +92,7 @@ static struct bpf_test tests[] = {
BPF_STMT(BPF_LD | BPF_B | BPF_IND, 1),
BPF_STMT(BPF_RET | BPF_A, 0)
},
- SKB,
+ CLASSIC,
{ 10, 20, 30, 40, 50 },
{ { 2, 10 }, { 3, 20 }, { 4, 30 } },
},
@@ -96,7 +104,7 @@ static struct bpf_test tests[] = {
BPF_STMT(BPF_ALU | BPF_ADD | BPF_X, 0),
BPF_STMT(BPF_RET | BPF_A, 0) /* A == len * 2 */
},
- SKB,
+ CLASSIC,
{ 10, 20, 30, 40, 50 },
{ { 1, 2 }, { 3, 6 }, { 4, 8 } },
},
@@ -111,7 +119,7 @@ static struct bpf_test tests[] = {
BPF_STMT(BPF_ALU | BPF_MUL | BPF_K, 3),
BPF_STMT(BPF_RET | BPF_A, 0)
},
- 0,
+ CLASSIC | FLAG_NO_DATA,
{ },
{ { 0, 0xfffffffd } }
},
@@ -129,7 +137,7 @@ static struct bpf_test tests[] = {
BPF_STMT(BPF_ALU | BPF_ADD | BPF_X, 0),
BPF_STMT(BPF_RET | BPF_A, 0)
},
- 0,
+ CLASSIC | FLAG_NO_DATA,
{ },
{ { 0, 0x40000001 } }
},
@@ -145,7 +153,7 @@ static struct bpf_test tests[] = {
BPF_STMT(BPF_ALU | BPF_ADD | BPF_X, 0),
BPF_STMT(BPF_RET | BPF_A, 0)
},
- 0,
+ CLASSIC | FLAG_NO_DATA,
{ },
{ { 0, 0x800000ff }, { 1, 0x800000ff } },
},
@@ -156,7 +164,7 @@ static struct bpf_test tests[] = {
BPF_STMT(BPF_LD | BPF_H | BPF_IND, MAX_K),
BPF_STMT(BPF_RET | BPF_K, 1)
},
- SKB,
+ CLASSIC,
{ },
{ { 1, 0 }, { 10, 0 }, { 60, 0 } },
},
@@ -166,7 +174,7 @@ static struct bpf_test tests[] = {
BPF_STMT(BPF_LD | BPF_W | BPF_ABS, 1000),
BPF_STMT(BPF_RET | BPF_K, 1)
},
- SKB,
+ CLASSIC,
{ },
{ { 1, 0 }, { 10, 0 }, { 60, 0 } },
},
@@ -179,7 +187,7 @@ static struct bpf_test tests[] = {
BPF_STMT(BPF_ALU | BPF_ADD | BPF_X, 0),
BPF_STMT(BPF_RET | BPF_A, 0)
},
- SKB,
+ CLASSIC,
{ 1, 2, 3 },
{ { 1, 0 }, { 2, 3 } },
},
@@ -193,7 +201,7 @@ static struct bpf_test tests[] = {
BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
BPF_STMT(BPF_RET | BPF_A, 0)
},
- SKB,
+ CLASSIC,
{ 1, 2, 3, 0xff },
{ { 1, 1 }, { 3, 3 }, { 4, 0xff } },
},
@@ -206,7 +214,7 @@ static struct bpf_test tests[] = {
BPF_STMT(BPF_ALU | BPF_ADD | BPF_X, 0),
BPF_STMT(BPF_RET | BPF_A, 0)
},
- SKB,
+ CLASSIC,
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 3 },
{ { 15, 0 }, { 16, 3 } },
},
@@ -220,7 +228,7 @@ static struct bpf_test tests[] = {
BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
BPF_STMT(BPF_RET | BPF_A, 0)
},
- SKB,
+ CLASSIC,
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 3 },
{ { 14, 0 }, { 15, 1 }, { 17, 3 } },
},
@@ -241,7 +249,7 @@ static struct bpf_test tests[] = {
BPF_STMT(BPF_RET | BPF_K, 1),
BPF_STMT(BPF_RET | BPF_A, 0)
},
- SKB,
+ CLASSIC,
{ },
{ { 1, 3 }, { 10, 3 } },
},
@@ -252,7 +260,7 @@ static struct bpf_test tests[] = {
SKF_AD_OFF + SKF_AD_MARK),
BPF_STMT(BPF_RET | BPF_A, 0)
},
- SKB,
+ CLASSIC,
{ },
{ { 1, SKB_MARK}, { 10, SKB_MARK} },
},
@@ -263,7 +271,7 @@ static struct bpf_test tests[] = {
SKF_AD_OFF + SKF_AD_RXHASH),
BPF_STMT(BPF_RET | BPF_A, 0)
},
- SKB,
+ CLASSIC,
{ },
{ { 1, SKB_HASH}, { 10, SKB_HASH} },
},
@@ -274,7 +282,7 @@ static struct bpf_test tests[] = {
SKF_AD_OFF + SKF_AD_QUEUE),
BPF_STMT(BPF_RET | BPF_A, 0)
},
- SKB,
+ CLASSIC,
{ },
{ { 1, SKB_QUEUE_MAP }, { 10, SKB_QUEUE_MAP } },
},
@@ -293,7 +301,7 @@ static struct bpf_test tests[] = {
BPF_STMT(BPF_MISC | BPF_TXA, 0),
BPF_STMT(BPF_RET | BPF_A, 0)
},
- SKB,
+ CLASSIC,
{ 10, 20, 30 },
{ { 10, ETH_P_IP }, { 100, ETH_P_IP } },
},
@@ -304,7 +312,7 @@ static struct bpf_test tests[] = {
SKF_AD_OFF + SKF_AD_VLAN_TAG),
BPF_STMT(BPF_RET | BPF_A, 0)
},
- SKB,
+ CLASSIC,
{ },
{
{ 1, SKB_VLAN_TCI & ~VLAN_TAG_PRESENT },
@@ -318,7 +326,7 @@ static struct bpf_test tests[] = {
SKF_AD_OFF + SKF_AD_VLAN_TAG_PRESENT),
BPF_STMT(BPF_RET | BPF_A, 0)
},
- SKB,
+ CLASSIC,
{ },
{
{ 1, !!(SKB_VLAN_TCI & VLAN_TAG_PRESENT) },
@@ -332,7 +340,7 @@ static struct bpf_test tests[] = {
SKF_AD_OFF + SKF_AD_IFINDEX),
BPF_STMT(BPF_RET | BPF_A, 0)
},
- SKB,
+ CLASSIC,
{ },
{ { 1, SKB_DEV_IFINDEX }, { 10, SKB_DEV_IFINDEX } },
},
@@ -343,7 +351,7 @@ static struct bpf_test tests[] = {
SKF_AD_OFF + SKF_AD_HATYPE),
BPF_STMT(BPF_RET | BPF_A, 0)
},
- SKB,
+ CLASSIC,
{ },
{ { 1, SKB_DEV_TYPE }, { 10, SKB_DEV_TYPE } },
},
@@ -358,7 +366,7 @@ static struct bpf_test tests[] = {
BPF_STMT(BPF_ALU | BPF_SUB | BPF_X, 0),
BPF_STMT(BPF_RET | BPF_A, 0)
},
- SKB,
+ CLASSIC,
{ },
{ { 1, 0 }, { 10, 0 } },
},
@@ -372,7 +380,7 @@ static struct bpf_test tests[] = {
SKF_AD_OFF + SKF_AD_NLATTR),
BPF_STMT(BPF_RET | BPF_A, 0)
},
- SKB,
+ CLASSIC,
{ 0xff, 4, 0, 2, 0, 4, 0, 3, 0 },
{ { 4, 0 }, { 20, 5 } },
},
@@ -406,7 +414,7 @@ static struct bpf_test tests[] = {
SKF_AD_OFF + SKF_AD_NLATTR_NEST),
BPF_STMT(BPF_RET | BPF_A, 0)
},
- SKB,
+ CLASSIC,
{ 0xff, 12, 0, 1, 0, 4, 0, 2, 0, 4, 0, 3, 0 },
{ { 4, 0 }, { 20, 9 } },
},
@@ -425,7 +433,7 @@ static struct bpf_test tests[] = {
SKF_AD_OFF + SKF_AD_PAY_OFFSET),
BPF_STMT(BPF_RET | BPF_A, 0)
},
- SKB,
+ CLASSIC,
/* 00:00:00:00:00:00 > 00:00:00:00:00:00, ethtype IPv4 (0x0800),
* length 98: 127.0.0.1 > 127.0.0.1: ICMP echo request,
* id 9737, seq 1, length 64
@@ -446,7 +454,7 @@ static struct bpf_test tests[] = {
SKF_AD_OFF + SKF_AD_ALU_XOR_X),
BPF_STMT(BPF_RET | BPF_A, 0)
},
- SKB,
+ CLASSIC,
{ },
{ { 4, 10 ^ 300 }, { 20, 10 ^ 300 } },
},
@@ -468,7 +476,7 @@ static struct bpf_test tests[] = {
BPF_STMT(BPF_ALU | BPF_XOR | BPF_X, 0),
BPF_STMT(BPF_RET | BPF_A, 0)
},
- SKB,
+ CLASSIC,
{ },
{ { 1, 0x80000001 }, { 2, 0x80000002 }, { 60, 0x80000000 ^ 60 } }
},
@@ -481,7 +489,7 @@ static struct bpf_test tests[] = {
BPF_STMT(BPF_RET | BPF_K, 1),
BPF_STMT(BPF_RET | BPF_K, MAX_K)
},
- SKB,
+ CLASSIC,
{ 3, 3, 3, 3, 3 },
{ { 1, 0 }, { 3, 1 }, { 4, MAX_K } },
},
@@ -494,7 +502,7 @@ static struct bpf_test tests[] = {
BPF_STMT(BPF_RET | BPF_K, 1),
BPF_STMT(BPF_RET | BPF_K, MAX_K)
},
- SKB,
+ CLASSIC,
{ 4, 4, 4, 3, 3 },
{ { 2, 0 }, { 3, 1 }, { 4, MAX_K } },
},
@@ -513,7 +521,7 @@ static struct bpf_test tests[] = {
BPF_STMT(BPF_RET | BPF_K, 40),
BPF_STMT(BPF_RET | BPF_K, MAX_K)
},
- SKB,
+ CLASSIC,
{ 1, 2, 3, 4, 5 },
{ { 1, 20 }, { 3, 40 }, { 5, MAX_K } },
},
@@ -545,7 +553,7 @@ static struct bpf_test tests[] = {
BPF_STMT(BPF_RET | BPF_K, 30),
BPF_STMT(BPF_RET | BPF_K, MAX_K)
},
- SKB,
+ CLASSIC,
{ 0, 0xAA, 0x55, 1 },
{ { 4, 10 }, { 5, 20 }, { 6, MAX_K } },
},
@@ -577,7 +585,7 @@ static struct bpf_test tests[] = {
{ 0x06, 0, 0, 0x0000ffff },
{ 0x06, 0, 0, 0x00000000 },
},
- SKB,
+ CLASSIC,
/* 3c:07:54:43:e5:76 > 10:bf:48:d6:43:d6, ethertype IPv4(0x0800)
* length 114: 10.1.1.149.49700 > 10.1.2.10.22: Flags [P.],
* seq 1305692979:1305693027, ack 3650467037, win 65535,
@@ -635,7 +643,7 @@ static struct bpf_test tests[] = {
{ 0x06, 0, 0, 0x0000ffff },
{ 0x06, 0, 0, 0x00000000 },
},
- SKB,
+ CLASSIC,
{ 0x10, 0xbf, 0x48, 0xd6, 0x43, 0xd6,
0x3c, 0x07, 0x54, 0x43, 0xe5, 0x76,
0x08, 0x00,
@@ -654,8 +662,8 @@ static struct bpf_test tests[] = {
BPF_STMT(BPF_MISC | BPF_TXA, 0),
BPF_STMT(BPF_RET | BPF_A, 0)
},
- SKB,
- {},
+ CLASSIC,
+ { },
{ {1, 0}, {2, 0} },
},
{
@@ -670,7 +678,7 @@ static struct bpf_test tests[] = {
BPF_ALU64_REG(BPF_MOV, R0, R1),
BPF_EXIT_INSN(),
},
- SKB_INT,
+ INTERNAL,
{ },
{ { 0, 0xfffffffd } }
},
@@ -686,7 +694,7 @@ static struct bpf_test tests[] = {
BPF_ALU64_IMM(BPF_MOV, R0, 1),
BPF_EXIT_INSN(),
},
- SKB_INT,
+ INTERNAL,
{ },
{ { 0, 1 } }
},
@@ -703,7 +711,7 @@ static struct bpf_test tests[] = {
BPF_ALU32_IMM(BPF_MOV, R0, 1),
BPF_EXIT_INSN(),
},
- SKB_INT,
+ INTERNAL,
{ },
{ { 0, 1 } }
},
@@ -720,7 +728,7 @@ static struct bpf_test tests[] = {
BPF_ALU32_IMM(BPF_MOV, R0, 1),
BPF_EXIT_INSN(),
},
- SKB_INT,
+ INTERNAL,
{ },
{ { 0, 1 } }
},
@@ -882,7 +890,7 @@ static struct bpf_test tests[] = {
BPF_ALU64_REG(BPF_MOV, R0, R9),
BPF_EXIT_INSN(),
},
- SKB_INT,
+ INTERNAL,
{ },
{ { 0, 2957380 } }
},
@@ -1028,7 +1036,7 @@ static struct bpf_test tests[] = {
BPF_ALU32_REG(BPF_MOV, R0, R9),
BPF_EXIT_INSN(),
},
- SKB_INT,
+ INTERNAL,
{ },
{ { 0, 2957380 } }
},
@@ -1161,7 +1169,7 @@ static struct bpf_test tests[] = {
BPF_ALU64_REG(BPF_SUB, R0, R9),
BPF_EXIT_INSN(),
},
- SKB_INT,
+ INTERNAL,
{ },
{ { 0, 11 } }
},
@@ -1227,7 +1235,7 @@ static struct bpf_test tests[] = {
BPF_ALU64_IMM(BPF_MOV, R0, 1),
BPF_EXIT_INSN(),
},
- SKB_INT,
+ INTERNAL,
{ },
{ { 0, 1 } }
},
@@ -1289,7 +1297,7 @@ static struct bpf_test tests[] = {
BPF_ALU64_REG(BPF_MOV, R0, R2),
BPF_EXIT_INSN(),
},
- SKB_INT,
+ INTERNAL,
{ },
{ { 0, 0x35d97ef2 } }
},
@@ -1309,7 +1317,7 @@ static struct bpf_test tests[] = {
BPF_ALU64_IMM(BPF_MOV, R0, -1),
BPF_EXIT_INSN(),
},
- SKB_INT,
+ INTERNAL,
{ },
{ { 0, -1 } }
},
@@ -1326,7 +1334,7 @@ static struct bpf_test tests[] = {
BPF_LD_IND(BPF_B, R8, -70),
BPF_EXIT_INSN(),
},
- SKB_INT,
+ INTERNAL,
{ 10, 20, 30, 40, 50 },
{ { 4, 0 }, { 5, 10 } }
},
@@ -1339,7 +1347,7 @@ static struct bpf_test tests[] = {
BPF_ALU32_REG(BPF_DIV, R0, R7),
BPF_EXIT_INSN(),
},
- SKB_INT,
+ INTERNAL,
{ 10, 20, 30, 40, 50 },
{ { 3, 0 }, { 4, 0 } }
},
@@ -1348,7 +1356,7 @@ static struct bpf_test tests[] = {
.u.insns = {
BPF_STMT(BPF_LD | BPF_IMM, 1),
},
- EXPECTED_FAIL,
+ CLASSIC | FLAG_NO_DATA | FLAG_EXPECTED_FAIL,
{ },
{ }
},
@@ -1358,7 +1366,7 @@ static struct bpf_test tests[] = {
BPF_STMT(BPF_ALU | BPF_DIV | BPF_K, 0),
BPF_STMT(BPF_RET | BPF_K, 0)
},
- EXPECTED_FAIL,
+ CLASSIC | FLAG_NO_DATA | FLAG_EXPECTED_FAIL,
{ },
{ }
},
@@ -1369,7 +1377,7 @@ static struct bpf_test tests[] = {
BPF_STMT(BPF_LDX | BPF_W | BPF_ABS, 0),
BPF_STMT(BPF_RET | BPF_K, 0)
},
- EXPECTED_FAIL,
+ CLASSIC | FLAG_EXPECTED_FAIL,
{ },
{ }
},
@@ -1379,26 +1387,15 @@ static struct bpf_test tests[] = {
BPF_STMT(BPF_STX, 16),
BPF_STMT(BPF_RET | BPF_K, 0)
},
- EXPECTED_FAIL,
+ CLASSIC | FLAG_NO_DATA | FLAG_EXPECTED_FAIL,
{ },
{ }
},
};
-static int get_length(struct sock_filter *fp)
-{
- int len = 0;
-
- while (fp->code != 0 || fp->k != 0) {
- fp++;
- len++;
- }
-
- return len;
-}
+static struct net_device dev;
-struct net_device dev;
-struct sk_buff *populate_skb(char *buf, int size)
+static struct sk_buff *populate_skb(char *buf, int size)
{
struct sk_buff *skb;
@@ -1410,6 +1407,8 @@ struct sk_buff *populate_skb(char *buf, int size)
return NULL;
memcpy(__skb_put(skb, size), buf, size);
+
+ /* Initialize a fake skb with test pattern. */
skb_reset_mac_header(skb);
skb->protocol = htons(ETH_P_IP);
skb->pkt_type = SKB_TYPE;
@@ -1425,43 +1424,149 @@ struct sk_buff *populate_skb(char *buf, int size)
return skb;
}
-static int run_one(struct sk_filter *fp, struct bpf_test *t)
+static void *generate_test_data(struct bpf_test *test, int sub)
{
- u64 start, finish, res, cnt = 100000;
- int err_cnt = 0, err, i, j;
- u32 ret = 0;
- void *data;
+ if (test->aux & FLAG_NO_DATA)
+ return NULL;
- for (i = 0; i < MAX_SUBTESTS; i++) {
- if (t->test[i].data_size == 0 &&
- t->test[i].result == 0)
- break;
- if (t->data_type == SKB ||
- t->data_type == SKB_INT) {
- data = populate_skb(t->data, t->test[i].data_size);
- if (!data)
- return -ENOMEM;
- } else {
- data = NULL;
+ /* Test case expects an skb, so populate one. Various
+ * subtests generate skbs of different sizes based on
+ * the same data.
+ */
+ return populate_skb(test->data, test->test[sub].data_size);
+}
+
+static void release_test_data(const struct bpf_test *test, void *data)
+{
+ if (test->aux & FLAG_NO_DATA)
+ return;
+
+ kfree_skb(data);
+}
+
+static int probe_filter_length(struct sock_filter *fp)
+{
+ int len = 0;
+
+ while (fp->code != 0 || fp->k != 0) {
+ fp++;
+ len++;
+ }
+
+ return len;
+}
+
+static struct sk_filter *generate_filter(int which, int *err)
+{
+ struct sk_filter *fp;
+ struct sock_fprog_kern fprog;
+ unsigned int flen = probe_filter_length(tests[which].u.insns);
+ __u8 test_type = tests[which].aux & TEST_TYPE_MASK;
+
+ switch (test_type) {
+ case CLASSIC:
+ fprog.filter = tests[which].u.insns;
+ fprog.len = flen;
+
+ *err = sk_unattached_filter_create(&fp, &fprog);
+ if (tests[which].aux & FLAG_EXPECTED_FAIL) {
+ if (*err == -EINVAL) {
+ pr_cont("PASS\n");
+ /* Verifier rejected filter as expected. */
+ *err = 0;
+ return NULL;
+ } else {
+ pr_cont("UNEXPECTED_PASS\n");
+ /* Verifier didn't reject the test that's
+ * bad enough, just return!
+ */
+ *err = -EINVAL;
+ return NULL;
+ }
+ }
+ /* We don't expect to fail. */
+ if (*err) {
+ pr_cont("FAIL to attach err=%d len=%d\n",
+ *err, fprog.len);
+ return NULL;
+ }
+ break;
+
+ case INTERNAL:
+ fp = kzalloc(sk_filter_size(flen), GFP_KERNEL);
+ if (fp == NULL) {
+ pr_cont("UNEXPECTED_FAIL no memory left\n");
+ *err = -ENOMEM;
+ return NULL;
}
- start = ktime_to_us(ktime_get());
- for (j = 0; j < cnt; j++)
- ret = SK_RUN_FILTER(fp, data);
- finish = ktime_to_us(ktime_get());
+ fp->len = flen;
+ memcpy(fp->insnsi, tests[which].u.insns_int,
+ fp->len * sizeof(struct sock_filter_int));
- res = (finish - start) * 1000;
- do_div(res, cnt);
+ sk_filter_select_runtime(fp);
+ break;
+ }
- err = ret != t->test[i].result;
- if (!err)
- pr_cont("%lld ", res);
+ *err = 0;
+ return fp;
+}
- if (t->data_type == SKB || t->data_type == SKB_INT)
- kfree_skb(data);
+static void release_filter(struct sk_filter *fp, int which)
+{
+ __u8 test_type = tests[which].aux & TEST_TYPE_MASK;
- if (err) {
- pr_cont("ret %d != %d ", ret, t->test[i].result);
+ switch (test_type) {
+ case CLASSIC:
+ sk_unattached_filter_destroy(fp);
+ break;
+ case INTERNAL:
+ sk_filter_free(fp);
+ break;
+ }
+}
+
+static int __run_one(const struct sk_filter *fp, const void *data,
+ int runs, u64 *duration)
+{
+ u64 start, finish;
+ int ret, i;
+
+ start = ktime_to_us(ktime_get());
+
+ for (i = 0; i < runs; i++)
+ ret = SK_RUN_FILTER(fp, data);
+
+ finish = ktime_to_us(ktime_get());
+
+ *duration = (finish - start) * 1000ULL;
+ do_div(*duration, runs);
+
+ return ret;
+}
+
+static int run_one(const struct sk_filter *fp, struct bpf_test *test)
+{
+ int err_cnt = 0, i, runs = MAX_TESTRUNS;
+
+ for (i = 0; i < MAX_SUBTESTS; i++) {
+ void *data;
+ u64 duration;
+ u32 ret;
+
+ if (test->test[i].data_size == 0 &&
+ test->test[i].result == 0)
+ break;
+
+ data = generate_test_data(test, i);
+ ret = __run_one(fp, data, runs, &duration);
+ release_test_data(test, data);
+
+ if (ret == test->test[i].result) {
+ pr_cont("%lld ", duration);
+ } else {
+ pr_cont("ret %d != %d ", ret,
+ test->test[i].result);
err_cnt++;
}
}
@@ -1471,65 +1576,37 @@ static int run_one(struct sk_filter *fp, struct bpf_test *t)
static __init int test_bpf(void)
{
- struct sk_filter *fp, *fp_ext = NULL;
- struct sock_fprog_kern fprog;
- int err, i, err_cnt = 0;
+ int i, err_cnt = 0, pass_cnt = 0;
for (i = 0; i < ARRAY_SIZE(tests); i++) {
- pr_info("#%d %s ", i, tests[i].descr);
+ struct sk_filter *fp;
+ int err;
- fprog.filter = tests[i].u.insns;
- fprog.len = get_length(fprog.filter);
+ pr_info("#%d %s ", i, tests[i].descr);
- if (tests[i].data_type == SKB_INT) {
- fp_ext = kzalloc(4096, GFP_KERNEL);
- if (!fp_ext)
- return -ENOMEM;
- fp = fp_ext;
- memcpy(fp_ext->insns, tests[i].u.insns_int,
- fprog.len * 8);
- fp->len = fprog.len;
- sk_filter_select_runtime(fp);
- } else {
- err = sk_unattached_filter_create(&fp, &fprog);
- if (tests[i].data_type == EXPECTED_FAIL) {
- if (err == -EINVAL) {
- pr_cont("PASS\n");
- continue;
- } else {
- pr_cont("UNEXPECTED_PASS\n");
- /* verifier didn't reject the test
- * that's bad enough, just return
- */
- return -EINVAL;
- }
- }
- if (err) {
- pr_cont("FAIL to attach err=%d len=%d\n",
- err, fprog.len);
- return err;
+ fp = generate_filter(i, &err);
+ if (fp == NULL) {
+ if (err == 0) {
+ pass_cnt++;
+ continue;
}
- }
+ return err;
+ }
err = run_one(fp, &tests[i]);
-
- if (tests[i].data_type != SKB_INT)
- sk_unattached_filter_destroy(fp);
- else
- sk_filter_free(fp);
+ release_filter(fp, i);
if (err) {
- pr_cont("FAIL %d\n", err);
+ pr_cont("FAIL (%d times)\n", err);
err_cnt++;
} else {
pr_cont("PASS\n");
+ pass_cnt++;
}
}
- if (err_cnt)
- return -EINVAL;
- else
- return 0;
+ pr_info("Summary: %d PASSED, %d FAILED\n", pass_cnt, err_cnt);
+ return err_cnt ? -EINVAL : 0;
}
static int __init test_bpf_init(void)
@@ -1543,4 +1620,5 @@ static void __exit test_bpf_exit(void)
module_init(test_bpf_init);
module_exit(test_bpf_exit);
+
MODULE_LICENSE("GPL");
--
1.7.11.7
^ permalink raw reply related [flat|nested] 6+ messages in thread* [PATCH net-next 5/5] net: filter: add test case for jump with holes and ret x variants
2014-05-23 16:43 [PATCH net-next 0/5] BPF updates Daniel Borkmann
` (3 preceding siblings ...)
2014-05-23 16:44 ` [PATCH net-next 4/5] net: filter: improve test case framework Daniel Borkmann
@ 2014-05-23 16:44 ` Daniel Borkmann
4 siblings, 0 replies; 6+ messages in thread
From: Daniel Borkmann @ 2014-05-23 16:44 UTC (permalink / raw)
To: davem; +Cc: ast, netdev
This patch adds three more test cases:
1) long jumps with holes of unreachable code
2) ret x
3) ldx + ret x
All three tests are for classical BPF and to make sure that
any changes will not break some exotic behaviour that exists
probably since decades. The last two tests are expected to
fail by the BPF checker already, as in classic BPF only K
or A are allowed to be returned. Thus, there are now 52 test
cases for BPF.
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Acked-by: Alexei Starovoitov <ast@plumgrid.com>
---
lib/test_bpf.c | 94 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 94 insertions(+)
diff --git a/lib/test_bpf.c b/lib/test_bpf.c
index da34e33..af677cb 100644
--- a/lib/test_bpf.c
+++ b/lib/test_bpf.c
@@ -1391,6 +1391,100 @@ static struct bpf_test tests[] = {
{ },
{ }
},
+ {
+ "JUMPS + HOLES",
+ .u.insns = {
+ BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
+ BPF_JUMP(BPF_JMP | BPF_JGE, 0, 13, 15),
+ BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
+ BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
+ BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
+ BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
+ BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
+ BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
+ BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
+ BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
+ BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
+ BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
+ BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
+ BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
+ BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
+ BPF_JUMP(BPF_JMP | BPF_JEQ, 0x90c2894d, 3, 4),
+ BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
+ BPF_JUMP(BPF_JMP | BPF_JEQ, 0x90c2894d, 1, 2),
+ BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
+ BPF_JUMP(BPF_JMP | BPF_JGE, 0, 14, 15),
+ BPF_JUMP(BPF_JMP | BPF_JGE, 0, 13, 14),
+ BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
+ BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
+ BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
+ BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
+ BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
+ BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
+ BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
+ BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
+ BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
+ BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
+ BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
+ BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
+ BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
+ BPF_JUMP(BPF_JMP | BPF_JEQ, 0x2ac28349, 2, 3),
+ BPF_JUMP(BPF_JMP | BPF_JEQ, 0x2ac28349, 1, 2),
+ BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
+ BPF_JUMP(BPF_JMP | BPF_JGE, 0, 14, 15),
+ BPF_JUMP(BPF_JMP | BPF_JGE, 0, 13, 14),
+ BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
+ BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
+ BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
+ BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
+ BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
+ BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
+ BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
+ BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
+ BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
+ BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
+ BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
+ BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
+ BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
+ BPF_JUMP(BPF_JMP | BPF_JEQ, 0x90d2ff41, 2, 3),
+ BPF_JUMP(BPF_JMP | BPF_JEQ, 0x90d2ff41, 1, 2),
+ BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
+ BPF_STMT(BPF_RET | BPF_A, 0),
+ BPF_STMT(BPF_RET | BPF_A, 0),
+ },
+ CLASSIC,
+ { 0x00, 0x1b, 0x21, 0x3c, 0x9d, 0xf8, 0x90, 0xe2,
+ 0xba, 0x0a, 0x56, 0xb4, 0x08, 0x00, 0x45, 0x00,
+ 0x00, 0x28, 0x00, 0x00, 0x20, 0x00, 0x40, 0x11,
+ 0x00, 0x00, 0xc0, 0xa8, 0x33, 0x01, 0xc0, 0xa8,
+ 0x33, 0x02, 0xbb, 0xb6, 0xa9, 0xfa, 0x00, 0x14,
+ 0x00, 0x00, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc,
+ 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc,
+ 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc,
+ 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc,
+ 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc,
+ 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc },
+ { { 88, 0x001b } }
+ },
+ {
+ "check: RET X",
+ .u.insns = {
+ BPF_STMT(BPF_RET | BPF_X, 0),
+ },
+ CLASSIC | FLAG_NO_DATA | FLAG_EXPECTED_FAIL,
+ { },
+ { },
+ },
+ {
+ "check: LDX + RET X",
+ .u.insns = {
+ BPF_STMT(BPF_LDX | BPF_IMM, 42),
+ BPF_STMT(BPF_RET | BPF_X, 0),
+ },
+ CLASSIC | FLAG_NO_DATA | FLAG_EXPECTED_FAIL,
+ { },
+ { },
+ },
};
static struct net_device dev;
--
1.7.11.7
^ permalink raw reply related [flat|nested] 6+ messages in thread