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authorJiong Wang <jiong.wang@netronome.com>2019-01-26 12:26:05 -0500
committerAlexei Starovoitov <ast@kernel.org>2019-01-26 13:33:01 -0800
commita7b76c8857692b0fce063b94ed83da11c396d341 (patch)
tree3d32a3fca06649bb2b0127b563a3a517ab91a3f2 /tools/include
parent503a8865a47752d0ac2ff642f07e96e8b2103178 (diff)
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bpf: JIT blinds support JMP32
This patch adds JIT blinds support for JMP32. Like BPF_JMP_REG/IMM, JMP32 version are needed for building raw bpf insn. They are added to both include/linux/filter.h and tools/include/linux/filter.h. Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: Jiong Wang <jiong.wang@netronome.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'tools/include')
-rw-r--r--tools/include/linux/filter.h20
1 files changed, 20 insertions, 0 deletions
diff --git a/tools/include/linux/filter.h b/tools/include/linux/filter.h
index af55acf73e75..cce0b02c0e28 100644
--- a/tools/include/linux/filter.h
+++ b/tools/include/linux/filter.h
@@ -199,6 +199,16 @@
.off = OFF, \
.imm = 0 })
+/* Like BPF_JMP_REG, but with 32-bit wide operands for comparison. */
+
+#define BPF_JMP32_REG(OP, DST, SRC, OFF) \
+ ((struct bpf_insn) { \
+ .code = BPF_JMP32 | BPF_OP(OP) | BPF_X, \
+ .dst_reg = DST, \
+ .src_reg = SRC, \
+ .off = OFF, \
+ .imm = 0 })
+
/* Conditional jumps against immediates, if (dst_reg 'op' imm32) goto pc + off16 */
#define BPF_JMP_IMM(OP, DST, IMM, OFF) \
@@ -209,6 +219,16 @@
.off = OFF, \
.imm = IMM })
+/* Like BPF_JMP_IMM, but with 32-bit wide operands for comparison. */
+
+#define BPF_JMP32_IMM(OP, DST, IMM, OFF) \
+ ((struct bpf_insn) { \
+ .code = BPF_JMP32 | BPF_OP(OP) | BPF_K, \
+ .dst_reg = DST, \
+ .src_reg = 0, \
+ .off = OFF, \
+ .imm = IMM })
+
/* Unconditional jumps, goto pc + off16 */
#define BPF_JMP_A(OFF) \