include/uapi/linux/netfilter/xt_bpf.h

   1 #ifndef _XT_BPF_H
   2 #define _XT_BPF_H
   3
   4 #include <linux/filter.h>
   5 #include <linux/limits.h>
   6 #include <linux/types.h>
   7
   8 #define XT_BPF_MAX_NUM_INSTR    64
   9 #define XT_BPF_PATH_MAX         (XT_BPF_MAX_NUM_INSTR * sizeof(struct sock_filter))
  10
  11 struct bpf_prog;
  12
  13 struct xt_bpf_info {
  14         __u16 bpf_program_num_elem;
  15         struct sock_filter bpf_program[XT_BPF_MAX_NUM_INSTR];
  16
  17         /* only used in the kernel */
  18         struct bpf_prog *filter __attribute__((aligned(8)));
  19 };
  20
  21 enum xt_bpf_modes {
  22         XT_BPF_MODE_BYTECODE,
  23         XT_BPF_MODE_FD_PINNED,
  24         XT_BPF_MODE_FD_ELF,
  25 };
  26 #define XT_BPF_MODE_PATH_PINNED XT_BPF_MODE_FD_PINNED
  27
  28 struct xt_bpf_info_v1 {
  29         __u16 mode;
  30         __u16 bpf_program_num_elem;
  31         __s32 fd;
  32         union {
  33                 struct sock_filter bpf_program[XT_BPF_MAX_NUM_INSTR];
  34                 char path[XT_BPF_PATH_MAX];
  35         };
  36
  37         /* only used in the kernel */
  38         struct bpf_prog *filter __attribute__((aligned(8)));
  39 };
  40
  41 #endif /*_XT_BPF_H */