bpf: btf: Sync bpf.h and btf.h to tools/ (3bd86a84) · Commits · e / devices / android_kernel_xiaomi_nabu

tools/include/uapi/linux/bpf.h

+12 −0

Original line number	Original line	Diff line number	Diff line
	@@ -95,6 +95,7 @@ enum bpf_cmd {
	BPF_OBJ_GET_INFO_BY_FD,		BPF_OBJ_GET_INFO_BY_FD,
	BPF_PROG_QUERY,		BPF_PROG_QUERY,
	BPF_RAW_TRACEPOINT_OPEN,		BPF_RAW_TRACEPOINT_OPEN,
			BPF_BTF_LOAD,
	};		};

	enum bpf_map_type {		enum bpf_map_type {
	@@ -279,6 +280,9 @@ union bpf_attr {
	*/		*/
	char map_name[BPF_OBJ_NAME_LEN];		char map_name[BPF_OBJ_NAME_LEN];
	__u32 map_ifindex; /* ifindex of netdev to create on */		__u32 map_ifindex; /* ifindex of netdev to create on */
			__u32 btf_fd; /* fd pointing to a BTF type data */
			__u32 btf_key_id; /* BTF type_id of the key */
			__u32 btf_value_id; /* BTF type_id of the value */
	};		};

	struct { /* anonymous struct used by BPF_MAP__ELEM commands /		struct { /* anonymous struct used by BPF_MAP__ELEM commands /
	@@ -363,6 +367,14 @@ union bpf_attr {
	__u64 name;		__u64 name;
	__u32 prog_fd;		__u32 prog_fd;
	} raw_tracepoint;		} raw_tracepoint;

			struct { /* anonymous struct for BPF_BTF_LOAD */
			__aligned_u64 btf;
			__aligned_u64 btf_log_buf;
			__u32 btf_size;
			__u32 btf_log_size;
			__u32 btf_log_level;
			};
	} __attribute__((aligned(8)));		} __attribute__((aligned(8)));

	/* BPF helper function descriptions:		/* BPF helper function descriptions:

tools/include/uapi/linux/btf.h

0 → 100644

+130 −0

Original line number	Original line	Diff line number	Diff line
			/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
			/* Copyright (c) 2018 Facebook */
			#ifndef _UAPI__LINUX_BTF_H__
			#define _UAPI__LINUX_BTF_H__

			#include <linux/types.h>

			#define BTF_MAGIC 0xeB9F
			#define BTF_MAGIC_SWAP 0x9FeB
			#define BTF_VERSION 1
			#define BTF_FLAGS_COMPR 0x01

			struct btf_header {
			__u16 magic;
			__u8 version;
			__u8 flags;

			__u32 parent_label;
			__u32 parent_name;

			/* All offsets are in bytes relative to the end of this header */
			__u32 label_off; /* offset of label section */
			__u32 object_off; /* offset of data object section*/
			__u32 func_off; /* offset of function section */
			__u32 type_off; /* offset of type section */
			__u32 str_off; /* offset of string section */
			__u32 str_len; /* length of string section */
			};

			/* Max # of type identifier */
			#define BTF_MAX_TYPE 0x7fffffff
			/* Max offset into the string section */
			#define BTF_MAX_NAME_OFFSET 0x7fffffff
			/* Max # of struct/union/enum members or func args */
			#define BTF_MAX_VLEN 0xffff

			/* The type id is referring to a parent BTF */
			#define BTF_TYPE_PARENT(id) (((id) >> 31) & 0x1)
			#define BTF_TYPE_ID(id) ((id) & BTF_MAX_TYPE)

			/* String is in the ELF string section */
			#define BTF_STR_TBL_ELF_ID(ref) (((ref) >> 31) & 0x1)
			#define BTF_STR_OFFSET(ref) ((ref) & BTF_MAX_NAME_OFFSET)

			struct btf_type {
			__u32 name;
			/* "info" bits arrangement
			* bits 0-15: vlen (e.g. # of struct's members)
			* bits 16-23: unused
			* bits 24-28: kind (e.g. int, ptr, array...etc)
			* bits 29-30: unused
			* bits 31: root
			*/
			__u32 info;
			/* "size" is used by INT, ENUM, STRUCT and UNION.
			* "size" tells the size of the type it is describing.
			*
			* "type" is used by PTR, TYPEDEF, VOLATILE, CONST and RESTRICT.
			* "type" is a type_id referring to another type.
			*/
			union {
			__u32 size;
			__u32 type;
			};
			};

			#define BTF_INFO_KIND(info) (((info) >> 24) & 0x1f)
			#define BTF_INFO_ISROOT(info) (!!(((info) >> 24) & 0x80))
			#define BTF_INFO_VLEN(info) ((info) & 0xffff)

			#define BTF_KIND_UNKN 0 /* Unknown */
			#define BTF_KIND_INT 1 /* Integer */
			#define BTF_KIND_PTR 2 /* Pointer */
			#define BTF_KIND_ARRAY 3 /* Array */
			#define BTF_KIND_STRUCT 4 /* Struct */
			#define BTF_KIND_UNION 5 /* Union */
			#define BTF_KIND_ENUM 6 /* Enumeration */
			#define BTF_KIND_FWD 7 /* Forward */
			#define BTF_KIND_TYPEDEF 8 /* Typedef */
			#define BTF_KIND_VOLATILE 9 /* Volatile */
			#define BTF_KIND_CONST 10 /* Const */
			#define BTF_KIND_RESTRICT 11 /* Restrict */
			#define BTF_KIND_MAX 11
			#define NR_BTF_KINDS 12

			/* For some specific BTF_KIND, "struct btf_type" is immediately
			* followed by extra data.
			*/

			/* BTF_KIND_INT is followed by a u32 and the following
			* is the 32 bits arrangement:
			*/
			#define BTF_INT_ENCODING(VAL) (((VAL) & 0xff000000) >> 24)
			#define BTF_INT_OFFSET(VAL) (((VAL & 0x00ff0000)) >> 16)
			#define BTF_INT_BITS(VAL) ((VAL) & 0x0000ffff)

			/* Attributes stored in the BTF_INT_ENCODING */
			#define BTF_INT_SIGNED 0x1
			#define BTF_INT_CHAR 0x2
			#define BTF_INT_BOOL 0x4
			#define BTF_INT_VARARGS 0x8

			/* BTF_KIND_ENUM is followed by multiple "struct btf_enum".
			* The exact number of btf_enum is stored in the vlen (of the
			* info in "struct btf_type").
			*/
			struct btf_enum {
			__u32 name;
			__s32 val;
			};

			/* BTF_KIND_ARRAY is followed by one "struct btf_array" */
			struct btf_array {
			__u32 type;
			__u32 index_type;
			__u32 nelems;
			};

			/* BTF_KIND_STRUCT and BTF_KIND_UNION are followed
			* by multiple "struct btf_member". The exact number
			* of btf_member is stored in the vlen (of the info in
			* "struct btf_type").
			*/
			struct btf_member {
			__u32 name;
			__u32 type;
			__u32 offset; /* offset in bits */
			};

			#endif /* _UAPI__LINUX_BTF_H__ */