1 /**************************************************************************** 2 **************************************************************************** 3 *** 4 *** This header was automatically generated from a Linux kernel header 5 *** of the same name, to make information necessary for userspace to 6 *** call into the kernel available to libc. It contains only constants, 7 *** structures, and macros generated from the original header, and thus, 8 *** contains no copyrightable information. 9 *** 10 **************************************************************************** 11 ****************************************************************************/ 12 #ifndef __LINUX_FILTER_H__ 13 #define __LINUX_FILTER_H__ 14 15 #include <linux/compiler.h> 16 #include <linux/types.h> 17 18 #define BPF_MAJOR_VERSION 1 19 #define BPF_MINOR_VERSION 1 20 21 struct sock_filter 22 { 23 __u16 code; 24 __u8 jt; 25 __u8 jf; 26 __u32 k; 27 }; 28 29 struct sock_fprog 30 { 31 unsigned short len; 32 struct sock_filter __user *filter; 33 }; 34 35 #define BPF_CLASS(code) ((code) & 0x07) 36 #define BPF_LD 0x00 37 #define BPF_LDX 0x01 38 #define BPF_ST 0x02 39 #define BPF_STX 0x03 40 #define BPF_ALU 0x04 41 #define BPF_JMP 0x05 42 #define BPF_RET 0x06 43 #define BPF_MISC 0x07 44 45 #define BPF_SIZE(code) ((code) & 0x18) 46 #define BPF_W 0x00 47 #define BPF_H 0x08 48 #define BPF_B 0x10 49 #define BPF_MODE(code) ((code) & 0xe0) 50 #define BPF_IMM 0x00 51 #define BPF_ABS 0x20 52 #define BPF_IND 0x40 53 #define BPF_MEM 0x60 54 #define BPF_LEN 0x80 55 #define BPF_MSH 0xa0 56 57 #define BPF_OP(code) ((code) & 0xf0) 58 #define BPF_ADD 0x00 59 #define BPF_SUB 0x10 60 #define BPF_MUL 0x20 61 #define BPF_DIV 0x30 62 #define BPF_OR 0x40 63 #define BPF_AND 0x50 64 #define BPF_LSH 0x60 65 #define BPF_RSH 0x70 66 #define BPF_NEG 0x80 67 #define BPF_JA 0x00 68 #define BPF_JEQ 0x10 69 #define BPF_JGT 0x20 70 #define BPF_JGE 0x30 71 #define BPF_JSET 0x40 72 #define BPF_SRC(code) ((code) & 0x08) 73 #define BPF_K 0x00 74 #define BPF_X 0x08 75 76 #define BPF_RVAL(code) ((code) & 0x18) 77 #define BPF_A 0x10 78 79 #define BPF_MISCOP(code) ((code) & 0xf8) 80 #define BPF_TAX 0x00 81 #define BPF_TXA 0x80 82 83 #ifndef BPF_MAXINSNS 84 #define BPF_MAXINSNS 4096 85 #endif 86 87 #ifndef BPF_STMT 88 #define BPF_STMT(code, k) { (unsigned short)(code), 0, 0, k } 89 #endif 90 #ifndef BPF_JUMP 91 #define BPF_JUMP(code, k, jt, jf) { (unsigned short)(code), jt, jf, k } 92 #endif 93 94 #define BPF_MEMWORDS 16 95 96 #define SKF_AD_OFF (-0x1000) 97 #define SKF_AD_PROTOCOL 0 98 #define SKF_AD_PKTTYPE 4 99 #define SKF_AD_IFINDEX 8 100 #define SKF_AD_MAX 12 101 #define SKF_NET_OFF (-0x100000) 102 #define SKF_LL_OFF (-0x200000) 103 104 #endif 105
