gistfile1.txt

struct bpf_instr insns[] = {
    BPF_STMT(BPF_LD + BPF_H + BPF_ABS, 12),
    BPF_JUMP(BPF_JMP + BPF_JEQ + BPF_K, ETHERTYPE_IP, 0, 3),
    BPF_STMT(BPF_LD + BPF_B + BPF_ABS, 23),
    BPF_JUMP(BPF_JMP + BPF_JEQ + BPF_K, IPPROTO_TCP, 0, 1),
    BPF_STMT(BPF_RET + BPF_K, (u32) -1),
    BPF_STMT(BPF_RET + BPF_K, 0),
};
   0:   55                      push   %rbp
   1:   48 89 ec                mov    %rbp,%rsp
   4:   0f b7 47 0c             movzwl 0xc(%rdi),%eax
   8:   86 e0                   xchg   %ah,%al
   a:   3d 00 08 00 00          cmp    $0x800,%eax
   f:   0f 85 14 00 00 00       jne    0x29
  15:   0f b6 47 17             movzbl 0x17(%rdi),%eax
  19:   83 f8 06                cmp    $0x6,%eax
  1c:   0f 85 07 00 00 00       jne    0x29
  22:   b8 ff ff ff ff          mov    $0xffffffff,%eax
  27:   5d                      pop    %rbp
  28:   c3                      ret
  29:   31 c0                   xor    %eax,%eax
  2b:   5d                      pop    %rbp
  2c:   c3                      ret