diff options
Diffstat (limited to 'include/linux/filter.h')
| -rw-r--r-- | include/linux/filter.h | 42 |
1 files changed, 41 insertions, 1 deletions
diff --git a/include/linux/filter.h b/include/linux/filter.h index d61dc72ebb96..89a6ef659b4c 100644 --- a/include/linux/filter.h +++ b/include/linux/filter.h @@ -64,6 +64,11 @@ struct sock_reuseport; /* unused opcode to mark call to interpreter with arguments */ #define BPF_CALL_ARGS 0xe0 +/* unused opcode to mark speculation barrier for mitigating + * Speculative Store Bypass + */ +#define BPF_NOSPEC 0xc0 + /* As per nm, we expose JITed images as text (code) section for * kallsyms. That way, tools like perf can find it to match * addresses. @@ -77,6 +82,14 @@ struct sock_reuseport; /* ALU ops on registers, bpf_add|sub|...: dst_reg += src_reg */ +#define BPF_ALU_REG(CLASS, OP, DST, SRC) \ + ((struct bpf_insn) { \ + .code = CLASS | BPF_OP(OP) | BPF_X, \ + .dst_reg = DST, \ + .src_reg = SRC, \ + .off = 0, \ + .imm = 0 }) + #define BPF_ALU64_REG(OP, DST, SRC) \ ((struct bpf_insn) { \ .code = BPF_ALU64 | BPF_OP(OP) | BPF_X, \ @@ -123,6 +136,14 @@ struct sock_reuseport; /* Short form of mov, dst_reg = src_reg */ +#define BPF_MOV_REG(CLASS, DST, SRC) \ + ((struct bpf_insn) { \ + .code = CLASS | BPF_MOV | BPF_X, \ + .dst_reg = DST, \ + .src_reg = SRC, \ + .off = 0, \ + .imm = 0 }) + #define BPF_MOV64_REG(DST, SRC) \ ((struct bpf_insn) { \ .code = BPF_ALU64 | BPF_MOV | BPF_X, \ @@ -157,6 +178,14 @@ struct sock_reuseport; .off = 0, \ .imm = IMM }) +#define BPF_RAW_REG(insn, DST, SRC) \ + ((struct bpf_insn) { \ + .code = (insn).code, \ + .dst_reg = DST, \ + .src_reg = SRC, \ + .off = (insn).off, \ + .imm = (insn).imm }) + /* BPF_LD_IMM64 macro encodes single 'load 64-bit immediate' insn */ #define BPF_LD_IMM64(DST, IMM) \ BPF_LD_IMM64_RAW(DST, 0, IMM) @@ -330,6 +359,16 @@ struct sock_reuseport; .off = 0, \ .imm = 0 }) +/* Speculation barrier */ + +#define BPF_ST_NOSPEC() \ + ((struct bpf_insn) { \ + .code = BPF_ST | BPF_NOSPEC, \ + .dst_reg = 0, \ + .src_reg = 0, \ + .off = 0, \ + .imm = 0 }) + /* Internal classic blocks for direct assignment */ #define __BPF_STMT(CODE, K) \ @@ -746,7 +785,7 @@ void sk_filter_uncharge(struct sock *sk, struct sk_filter *fp); u64 __bpf_call_base(u64 r1, u64 r2, u64 r3, u64 r4, u64 r5); #define __bpf_call_base_args \ ((u64 (*)(u64, u64, u64, u64, u64, const struct bpf_insn *)) \ - __bpf_call_base) + (void *)__bpf_call_base) struct bpf_prog *bpf_int_jit_compile(struct bpf_prog *prog); void bpf_jit_compile(struct bpf_prog *prog); @@ -838,6 +877,7 @@ extern int bpf_jit_enable; extern int bpf_jit_harden; extern int bpf_jit_kallsyms; extern long bpf_jit_limit; +extern long bpf_jit_limit_max; typedef void (*bpf_jit_fill_hole_t)(void *area, unsigned int size); |