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bpf: btf: Sync bpf.h and btf.h to tools

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This patch sync the uapi bpf.h and btf.h to tools.

Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Acked-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
This commit is contained in:
Martin KaFai Lau 2018-05-22 14:57:22 -07:00 committed by Daniel Borkmann
parent 9b2cf328b2
commit f03b15d34b
2 changed files with 15 additions and 30 deletions
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8
tools/include/uapi/linux/bpf.h
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@ -284,8 +284,8 @@ union bpf_attr {
char map_name[BPF_OBJ_NAME_LEN];
__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 */
__u32 btf_key_type_id; /* BTF type_id of the key */
__u32 btf_value_type_id; /* BTF type_id of the value */
};
struct { /* anonymous struct used by BPF_MAP_*_ELEM commands */
@ -2219,8 +2219,8 @@ struct bpf_map_info {
__u64 netns_dev;
__u64 netns_ino;
__u32 btf_id;
__u32 btf_key_id;
__u32 btf_value_id;
__u32 btf_key_type_id;
__u32 btf_value_type_id;
} __attribute__((aligned(8)));
struct bpf_btf_info {

37
tools/include/uapi/linux/btf.h
View File

@ -12,42 +12,29 @@ struct btf_header {
__u16 magic;
__u8 version;
__u8 flags;
__u32 parent_label;
__u32 parent_name;
__u32 hdr_len;
/* 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 type_len; /* length 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
#define BTF_MAX_TYPE 0x0000ffff
/* Max offset into the string section */
#define BTF_MAX_NAME_OFFSET 0x7fffffff
#define BTF_MAX_NAME_OFFSET 0x0000ffff
/* 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_off;
/* "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
* bits 24-27: kind (e.g. int, ptr, array...etc)
* bits 28-31: unused
*/
__u32 info;
/* "size" is used by INT, ENUM, STRUCT and UNION.
@ -62,8 +49,7 @@ struct btf_type {
};
};
#define BTF_INFO_KIND(info) (((info) >> 24) & 0x1f)
#define BTF_INFO_ISROOT(info) (!!(((info) >> 24) & 0x80))
#define BTF_INFO_KIND(info) (((info) >> 24) & 0x0f)
#define BTF_INFO_VLEN(info) ((info) & 0xffff)
#define BTF_KIND_UNKN 0 /* Unknown */
@ -88,15 +74,14 @@ struct btf_type {
/* 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_ENCODING(VAL) (((VAL) & 0x0f000000) >> 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
#define BTF_INT_SIGNED (1 << 0)
#define BTF_INT_CHAR (1 << 1)
#define BTF_INT_BOOL (1 << 2)
/* BTF_KIND_ENUM is followed by multiple "struct btf_enum".
* The exact number of btf_enum is stored in the vlen (of the