diff options
Diffstat (limited to 'include/linux/filter.h')
| -rw-r--r-- | include/linux/filter.h | 133 |
1 files changed, 1 insertions, 132 deletions
diff --git a/include/linux/filter.h b/include/linux/filter.h index 2ded090e10f..24d251f3bab 100644 --- a/include/linux/filter.h +++ b/include/linux/filter.h @@ -1,141 +1,12 @@ /* * Linux Socket Filter Data Structures */ - #ifndef __LINUX_FILTER_H__ #define __LINUX_FILTER_H__ -#include <linux/compiler.h> -#include <linux/types.h> - -#ifdef __KERNEL__ #include <linux/atomic.h> #include <linux/compat.h> -#endif - -/* - * Current version of the filter code architecture. - */ -#define BPF_MAJOR_VERSION 1 -#define BPF_MINOR_VERSION 1 - -/* - * Try and keep these values and structures similar to BSD, especially - * the BPF code definitions which need to match so you can share filters - */ - -struct sock_filter { /* Filter block */ - __u16 code; /* Actual filter code */ - __u8 jt; /* Jump true */ - __u8 jf; /* Jump false */ - __u32 k; /* Generic multiuse field */ -}; - -struct sock_fprog { /* Required for SO_ATTACH_FILTER. */ - unsigned short len; /* Number of filter blocks */ - struct sock_filter __user *filter; -}; - -/* - * Instruction classes - */ - -#define BPF_CLASS(code) ((code) & 0x07) -#define BPF_LD 0x00 -#define BPF_LDX 0x01 -#define BPF_ST 0x02 -#define BPF_STX 0x03 -#define BPF_ALU 0x04 -#define BPF_JMP 0x05 -#define BPF_RET 0x06 -#define BPF_MISC 0x07 - -/* ld/ldx fields */ -#define BPF_SIZE(code) ((code) & 0x18) -#define BPF_W 0x00 -#define BPF_H 0x08 -#define BPF_B 0x10 -#define BPF_MODE(code) ((code) & 0xe0) -#define BPF_IMM 0x00 -#define BPF_ABS 0x20 -#define BPF_IND 0x40 -#define BPF_MEM 0x60 -#define BPF_LEN 0x80 -#define BPF_MSH 0xa0 - -/* alu/jmp fields */ -#define BPF_OP(code) ((code) & 0xf0) -#define BPF_ADD 0x00 -#define BPF_SUB 0x10 -#define BPF_MUL 0x20 -#define BPF_DIV 0x30 -#define BPF_OR 0x40 -#define BPF_AND 0x50 -#define BPF_LSH 0x60 -#define BPF_RSH 0x70 -#define BPF_NEG 0x80 -#define BPF_MOD 0x90 -#define BPF_XOR 0xa0 - -#define BPF_JA 0x00 -#define BPF_JEQ 0x10 -#define BPF_JGT 0x20 -#define BPF_JGE 0x30 -#define BPF_JSET 0x40 -#define BPF_SRC(code) ((code) & 0x08) -#define BPF_K 0x00 -#define BPF_X 0x08 - -/* ret - BPF_K and BPF_X also apply */ -#define BPF_RVAL(code) ((code) & 0x18) -#define BPF_A 0x10 - -/* misc */ -#define BPF_MISCOP(code) ((code) & 0xf8) -#define BPF_TAX 0x00 -#define BPF_TXA 0x80 - -#ifndef BPF_MAXINSNS -#define BPF_MAXINSNS 4096 -#endif - -/* - * Macros for filter block array initializers. - */ -#ifndef BPF_STMT -#define BPF_STMT(code, k) { (unsigned short)(code), 0, 0, k } -#endif -#ifndef BPF_JUMP -#define BPF_JUMP(code, k, jt, jf) { (unsigned short)(code), jt, jf, k } -#endif - -/* - * Number of scratch memory words for: BPF_ST and BPF_STX - */ -#define BPF_MEMWORDS 16 - -/* RATIONALE. Negative offsets are invalid in BPF. - We use them to reference ancillary data. - Unlike introduction new instructions, it does not break - existing compilers/optimizers. - */ -#define SKF_AD_OFF (-0x1000) -#define SKF_AD_PROTOCOL 0 -#define SKF_AD_PKTTYPE 4 -#define SKF_AD_IFINDEX 8 -#define SKF_AD_NLATTR 12 -#define SKF_AD_NLATTR_NEST 16 -#define SKF_AD_MARK 20 -#define SKF_AD_QUEUE 24 -#define SKF_AD_HATYPE 28 -#define SKF_AD_RXHASH 32 -#define SKF_AD_CPU 36 -#define SKF_AD_ALU_XOR_X 40 -#define SKF_AD_MAX 44 -#define SKF_NET_OFF (-0x100000) -#define SKF_LL_OFF (-0x200000) - -#ifdef __KERNEL__ +#include <uapi/linux/filter.h> #ifdef CONFIG_COMPAT /* @@ -254,6 +125,4 @@ enum { BPF_S_ANC_SECCOMP_LD_W, }; -#endif /* __KERNEL__ */ - #endif /* __LINUX_FILTER_H__ */ |