/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note *//* * Linux Socket Filter Data Structures */ #ifndef _UAPI__LINUX_FILTER_H__#define _UAPI__LINUX_FILTER_H__ #include <linux/compiler.h>#include <linux/types.h>#include <linux/bpf_common.h> /* * 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;}; /* 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 /* * 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_VLAN_TAG	44#define SKF_AD_VLAN_TAG_PRESENT 48#define SKF_AD_PAY_OFFSET	52#define SKF_AD_RANDOM	56#define SKF_AD_VLAN_TPID	60#define SKF_AD_MAX	64 #define SKF_NET_OFF	(-0x100000)#define SKF_LL_OFF	(-0x200000) #define BPF_NET_OFF	SKF_NET_OFF#define BPF_LL_OFF	SKF_LL_OFF #endif /* _UAPI__LINUX_FILTER_H__ */