This file contains eBPF definitions common to eBPF programs, core execution engine as well as eBPF API library. More...

#include "ebpf_windows.h"

Data Structures
struct	_ebpf_map_definition_in_memory
	eBPF Map Definition as it is stored in memory. More...

struct	_ebpf_map_definition_in_file
	eBPF Map Definition as it appears in the maps section of an ELF file. More...

struct	bpf_link_info
	eBPF link information. This structure can be retrieved by calling bpf_obj_get_info_by_fd on a link fd. More...

struct	bpf_map_info
	eBPF map information. This structure can be retrieved by calling bpf_obj_get_info_by_fd on a map fd. More...

struct	bpf_prog_info
	eBPF program information. This structure can be retrieved by calling bpf_obj_get_info_by_fd on a program fd. More...

Macros
#define	MAX_TAIL_CALL_CNT 33

#define	BPF_ENUM_TO_STRING(X) #X

#define	BPF_MAP_TYPE_PER_CPU(X) ((X) == BPF_MAP_TYPE_PERCPU_HASH \|\| (X) == BPF_MAP_TYPE_PERCPU_ARRAY \|\| (X) == BPF_MAP_TYPE_LRU_PERCPU_HASH)

#define	EBPF_ID_NONE UINT32_MAX

#define	XDP_FLAGS_REPLACE 0x01

#define	BPF_OBJ_NAME_LEN 64

#define	BPF_ANY 0x0

#define	BPF_NOEXIST 0x1

#define	BPF_EXIST 0x2

Typedefs
typedef enum bpf_map_type	ebpf_map_type_t

typedef enum ebpf_map_option	ebpf_map_option_t

typedef enum ebpf_pin_type	ebpf_pin_type_t
	Pinning type for eBPF objects. The values should match the LIBBPF_PIN_* pin types defined in libbpf. More...

typedef uint32_t	ebpf_id_t

typedef struct _ebpf_map_definition_in_memory	ebpf_map_definition_in_memory_t
	eBPF Map Definition as it is stored in memory. More...

typedef struct _ebpf_map_definition_in_file	ebpf_map_definition_in_file_t
	eBPF Map Definition as it appears in the maps section of an ELF file. More...

typedef enum bpf_prog_type	bpf_prog_type_t

typedef enum bpf_attach_type	bpf_attach_type_t

Enumerations
enum	bpf_map_type { BPF_MAP_TYPE_UNSPEC = 0 , BPF_MAP_TYPE_HASH = 1 , BPF_MAP_TYPE_ARRAY = 2 , BPF_MAP_TYPE_PROG_ARRAY , BPF_MAP_TYPE_PERCPU_HASH = 4 , BPF_MAP_TYPE_PERCPU_ARRAY = 5 , BPF_MAP_TYPE_HASH_OF_MAPS = 6 , BPF_MAP_TYPE_ARRAY_OF_MAPS = 7 , BPF_MAP_TYPE_LRU_HASH = 8 , BPF_MAP_TYPE_LPM_TRIE = 9 , BPF_MAP_TYPE_QUEUE = 10 , BPF_MAP_TYPE_LRU_PERCPU_HASH = 11 , BPF_MAP_TYPE_STACK = 12 , BPF_MAP_TYPE_RINGBUF = 13 }

enum	ebpf_map_option { EBPF_ANY , EBPF_NOEXIST , EBPF_EXIST }

enum	ebpf_pin_type { LIBBPF_PIN_NONE = 0 , LIBBPF_PIN_BY_NAME }
	Pinning type for eBPF objects. The values should match the LIBBPF_PIN_* pin types defined in libbpf. More...

enum	ebpf_helper_id_t { BPF_FUNC_map_lookup_elem = 1 , BPF_FUNC_map_update_elem = 2 , BPF_FUNC_map_delete_elem = 3 , BPF_FUNC_map_lookup_and_delete_elem = 4 , BPF_FUNC_tail_call = 5 , BPF_FUNC_get_prandom_u32 = 6 , BPF_FUNC_ktime_get_boot_ns = 7 , BPF_FUNC_get_smp_processor_id = 8 , BPF_FUNC_ktime_get_ns = 9 , BPF_FUNC_csum_diff = 10 , BPF_FUNC_ringbuf_output = 11 , BPF_FUNC_trace_printk2 = 12 , BPF_FUNC_trace_printk3 = 13 , BPF_FUNC_trace_printk4 = 14 , BPF_FUNC_trace_printk5 = 15 , BPF_FUNC_map_push_elem = 16 , BPF_FUNC_map_pop_elem = 17 , BPF_FUNC_map_peek_elem = 18 , BPF_FUNC_get_current_pid_tgid = 19 , BPF_FUNC_get_current_logon_id = 20 , BPF_FUNC_is_current_admin = 21 , BPF_FUNC_memcpy = 22 , BPF_FUNC_memcmp = 23 , BPF_FUNC_memset = 24 , BPF_FUNC_memmove = 25 , BPF_FUNC_get_socket_cookie = 26 , BPF_FUNC_strncpy_s = 27 , BPF_FUNC_strncat_s = 28 , BPF_FUNC_strnlen_s = 29 }

enum	bpf_prog_type { BPF_PROG_TYPE_UNSPEC , BPF_PROG_TYPE_XDP , BPF_PROG_TYPE_BIND , BPF_PROG_TYPE_CGROUP_SOCK_ADDR , BPF_PROG_TYPE_SOCK_OPS , BPF_PROG_TYPE_XDP_TEST = 998 , BPF_PROG_TYPE_SAMPLE = 999 }

enum	bpf_link_type { BPF_LINK_TYPE_UNSPEC , BPF_LINK_TYPE_PLAIN , BPF_LINK_TYPE_CGROUP , BPF_LINK_TYPE_XDP , BPF_LINK_TYPE_MAX }

enum	bpf_attach_type { BPF_ATTACH_TYPE_UNSPEC , BPF_XDP , BPF_ATTACH_TYPE_BIND , BPF_CGROUP_INET4_CONNECT , BPF_CGROUP_INET6_CONNECT , BPF_CGROUP_INET4_RECV_ACCEPT , BPF_CGROUP_INET6_RECV_ACCEPT , BPF_CGROUP_SOCK_OPS , BPF_ATTACH_TYPE_SAMPLE , BPF_XDP_TEST , __MAX_BPF_ATTACH_TYPE }

Detailed Description

This file contains eBPF definitions common to eBPF programs, core execution engine as well as eBPF API library.

Macro Definition Documentation

◆ BPF_ANY

#define BPF_ANY 0x0

◆ BPF_ENUM_TO_STRING

#define BPF_ENUM_TO_STRING ( X ) #X

◆ BPF_EXIST

#define BPF_EXIST 0x2

◆ BPF_MAP_TYPE_PER_CPU

#define BPF_MAP_TYPE_PER_CPU ( X ) ((X) == BPF_MAP_TYPE_PERCPU_HASH || (X) == BPF_MAP_TYPE_PERCPU_ARRAY || (X) == BPF_MAP_TYPE_LRU_PERCPU_HASH)

◆ BPF_NOEXIST

#define BPF_NOEXIST 0x1

◆ BPF_OBJ_NAME_LEN

#define BPF_OBJ_NAME_LEN 64

◆ EBPF_ID_NONE

#define EBPF_ID_NONE UINT32_MAX

◆ MAX_TAIL_CALL_CNT

#define MAX_TAIL_CALL_CNT 33

◆ XDP_FLAGS_REPLACE

#define XDP_FLAGS_REPLACE 0x01

Typedef Documentation

◆ bpf_attach_type_t

typedef enum bpf_attach_type bpf_attach_type_t

◆ bpf_prog_type_t

typedef enum bpf_prog_type bpf_prog_type_t

◆ ebpf_id_t

typedef uint32_t ebpf_id_t

◆ ebpf_map_definition_in_file_t

typedef struct _ebpf_map_definition_in_file ebpf_map_definition_in_file_t

eBPF Map Definition as it appears in the maps section of an ELF file.

◆ ebpf_map_definition_in_memory_t

typedef struct _ebpf_map_definition_in_memory ebpf_map_definition_in_memory_t

eBPF Map Definition as it is stored in memory.

◆ ebpf_map_option_t

typedef enum ebpf_map_option ebpf_map_option_t

◆ ebpf_map_type_t

typedef enum bpf_map_type ebpf_map_type_t

◆ ebpf_pin_type_t

typedef enum ebpf_pin_type ebpf_pin_type_t

Pinning type for eBPF objects. The values should match the LIBBPF_PIN_* pin types defined in libbpf.

Enumeration Type Documentation

◆ bpf_attach_type

enum bpf_attach_type

Enumerator
BPF_ATTACH_TYPE_UNSPEC	Unspecified attach type.
BPF_XDP	Attach type for handling incoming packets as early as possible. Program type: BPF_PROG_TYPE_XDP
BPF_ATTACH_TYPE_BIND	Attach type for handling socket bind() requests. Program type: BPF_PROG_TYPE_BIND
BPF_CGROUP_INET4_CONNECT	Attach type for handling IPv4 TCP connect() or UDP send to a unique remote address/port tuple. Program type: BPF_PROG_TYPE_CGROUP_SOCK_ADDR
BPF_CGROUP_INET6_CONNECT	Attach type for handling IPv6 TCP connect() or UDP send to a unique remote address/port tuple. Program type: BPF_PROG_TYPE_CGROUP_SOCK_ADDR
BPF_CGROUP_INET4_RECV_ACCEPT	Attach type for handling IPv4 TCP accept() or on receiving the first unicast UDP packet from a unique remote address/port tuple. Program type: BPF_PROG_TYPE_CGROUP_SOCK_ADDR
BPF_CGROUP_INET6_RECV_ACCEPT	Attach type for handling IPv6 TCP accept() or on receiving the first unicast UDP packet from a unique remote address/port tuple. Program type: BPF_PROG_TYPE_CGROUP_SOCK_ADDR
BPF_CGROUP_SOCK_OPS	Attach type for handling various socket event notifications. Program type: BPF_PROG_TYPE_SOCK_OPS
BPF_ATTACH_TYPE_SAMPLE	Attach type implemented by eBPF Sample Extension driver, used for testing. Program type: BPF_PROG_TYPE_SAMPLE
BPF_XDP_TEST	Attach type for handling incoming packets as early as possible. Program type: BPF_PROG_TYPE_XDP_TEST
__MAX_BPF_ATTACH_TYPE

◆ bpf_link_type

enum bpf_link_type

Enumerator
BPF_LINK_TYPE_UNSPEC	Unspecified link type.
BPF_LINK_TYPE_PLAIN	No union members are used in bpf_link_info.
BPF_LINK_TYPE_CGROUP	cgroup struct is present in bpf_link_info.
BPF_LINK_TYPE_XDP	xdp struct is present in bpf_link_info.
BPF_LINK_TYPE_MAX

◆ bpf_map_type

enum bpf_map_type

Enumerator
BPF_MAP_TYPE_UNSPEC	Unspecified map type.
BPF_MAP_TYPE_HASH	Hash table.
BPF_MAP_TYPE_ARRAY	Array, where the map key is the array index.
BPF_MAP_TYPE_PROG_ARRAY	Array of program fds usable with bpf_tail_call, where the map key is the array index.
BPF_MAP_TYPE_PERCPU_HASH	Per-CPU hash table.
BPF_MAP_TYPE_PERCPU_ARRAY	Per-CPU array.
BPF_MAP_TYPE_HASH_OF_MAPS	Hash table, where the map value is another map.
BPF_MAP_TYPE_ARRAY_OF_MAPS	Array, where the map value is another map.
BPF_MAP_TYPE_LRU_HASH	Least-recently-used hash table.
BPF_MAP_TYPE_LPM_TRIE	Longest prefix match trie.
BPF_MAP_TYPE_QUEUE	Queue.
BPF_MAP_TYPE_LRU_PERCPU_HASH	Per-CPU least-recently-used hash table.
BPF_MAP_TYPE_STACK	Stack.
BPF_MAP_TYPE_RINGBUF	Ring buffer.

◆ bpf_prog_type

enum bpf_prog_type

Enumerator
BPF_PROG_TYPE_UNSPEC	Unspecified program type.
BPF_PROG_TYPE_XDP	Program type for handling incoming packets as early as possible. eBPF program prototype: xdp_hook_t Attach type(s): BPF_XDP Helpers available: all helpers defined in bpf_helpers.h
BPF_PROG_TYPE_BIND	Program type for handling socket bind() requests. eBPF program prototype: bind_hook_t Attach type(s): BPF_ATTACH_TYPE_BIND Helpers available: all helpers defined in bpf_helpers.h
BPF_PROG_TYPE_CGROUP_SOCK_ADDR	Program type for handling various socket operations such as connect(), accept() etc. eBPF program prototype: sock_addr_hook_t Attach type(s): BPF_CGROUP_INET4_CONNECT BPF_CGROUP_INET6_CONNECT BPF_CGROUP_INET4_RECV_ACCEPT BPF_CGROUP_INET6_RECV_ACCEPT Helpers available: all helpers defined in bpf_helpers.h
BPF_PROG_TYPE_SOCK_OPS	Program type for handling various socket event notifications such as connection established etc. eBPF program prototype: sock_ops_hook_t Attach type(s): BPF_CGROUP_SOCK_OPS Helpers available: all helpers defined in bpf_helpers.h
BPF_PROG_TYPE_XDP_TEST	Program type for handling incoming packets as early as possible. eBPF program prototype: xdp_hook_t Attach type(s): BPF_XDP_TEST Helpers available: all helpers defined in bpf_helpers.h
BPF_PROG_TYPE_SAMPLE	Program type for handling calls from the eBPF sample extension. Used for testing. eBPF program prototype: see the eBPF sample extension. Attach type(s): BPF_ATTACH_TYPE_SAMPLE

◆ ebpf_helper_id_t

enum ebpf_helper_id_t

Enumerator
BPF_FUNC_map_lookup_elem	bpf_map_lookup_elem
BPF_FUNC_map_update_elem	bpf_map_update_elem
BPF_FUNC_map_delete_elem	bpf_map_delete_elem
BPF_FUNC_map_lookup_and_delete_elem	bpf_map_lookup_and_delete_elem
BPF_FUNC_tail_call	bpf_tail_call
BPF_FUNC_get_prandom_u32	bpf_get_prandom_u32
BPF_FUNC_ktime_get_boot_ns	bpf_ktime_get_boot_ns
BPF_FUNC_get_smp_processor_id	bpf_get_smp_processor_id
BPF_FUNC_ktime_get_ns	bpf_ktime_get_ns
BPF_FUNC_csum_diff	bpf_csum_diff
BPF_FUNC_ringbuf_output	bpf_ringbuf_output
BPF_FUNC_trace_printk2	bpf_trace_printk2 (but use bpf_printk instead)
BPF_FUNC_trace_printk3	bpf_trace_printk3 (but use bpf_printk instead)
BPF_FUNC_trace_printk4	bpf_trace_printk4 (but use bpf_printk instead)
BPF_FUNC_trace_printk5	bpf_trace_printk5 (but use bpf_printk instead)
BPF_FUNC_map_push_elem	bpf_map_push_elem
BPF_FUNC_map_pop_elem	bpf_map_pop_elem
BPF_FUNC_map_peek_elem	bpf_map_peek_elem
BPF_FUNC_get_current_pid_tgid	bpf_get_current_pid_tgid
BPF_FUNC_get_current_logon_id	bpf_get_current_logon_id
BPF_FUNC_is_current_admin	bpf_is_current_admin
BPF_FUNC_memcpy	bpf_memcpy
BPF_FUNC_memcmp	bpf_memcmp
BPF_FUNC_memset	bpf_memset
BPF_FUNC_memmove	bpf_memmove
BPF_FUNC_get_socket_cookie	bpf_get_socket_cookie
BPF_FUNC_strncpy_s	bpf_strncpy_s
BPF_FUNC_strncat_s	bpf_strncat_s
BPF_FUNC_strnlen_s	bpf_strnlen_s

◆ ebpf_map_option

enum ebpf_map_option

Enumerator
EBPF_ANY	Create a new element or update an existing element.
EBPF_NOEXIST	Create a new element only when it does not exist.
EBPF_EXIST	Update an existing element.

◆ ebpf_pin_type

enum ebpf_pin_type