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 27 struct xt_bpf_info_v1 { 28 __u16 mode; 29 __u16 bpf_program_num_elem; 30 __s32 fd; 31 union { 32 struct sock_filter bpf_program[XT_BPF_MAX_NUM_INSTR]; 33 char path[XT_BPF_PATH_MAX]; 34 }; 35 36 /* only used in the kernel */ 37 struct bpf_prog *filter __attribute__((aligned(8))); 38 }; 39 40 #endif /*_XT_BPF_H */ 41