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// SPDX-License-Identifier: GPL-3.0-or-later
#ifndef NETDATA_COLLECTOR_EBPF_H
#define NETDATA_COLLECTOR_EBPF_H 1
#ifndef __FreeBSD__
#include <linux/perf_event.h>
#endif
#include <stdint.h>
#include <errno.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <dlfcn.h>
#include <fcntl.h>
#include <ctype.h>
#include <dirent.h>
// From libnetdata.h
#include "libnetdata/threads/threads.h"
#include "libnetdata/locks/locks.h"
#include "libnetdata/avl/avl.h"
#include "libnetdata/clocks/clocks.h"
#include "libnetdata/config/appconfig.h"
#include "libnetdata/ebpf/ebpf.h"
#include "libnetdata/procfile/procfile.h"
#include "collectors/cgroups.plugin/sys_fs_cgroup.h"
#include "daemon/main.h"
#include "ebpf_apps.h"
#include "ebpf_cgroup.h"
#define NETDATA_EBPF_OLD_CONFIG_FILE "ebpf.conf"
#define NETDATA_EBPF_CONFIG_FILE "ebpf.d.conf"
#ifdef LIBBPF_MAJOR_VERSION // BTF code
#include "includes/cachestat.skel.h"
#include "includes/dc.skel.h"
#include "includes/fd.skel.h"
#include "includes/mount.skel.h"
#include "includes/shm.skel.h"
#include "includes/socket.skel.h"
#include "includes/swap.skel.h"
#include "includes/vfs.skel.h"
extern struct cachestat_bpf *cachestat_bpf_obj;
extern struct dc_bpf *dc_bpf_obj;
extern struct fd_bpf *fd_bpf_obj;
extern struct mount_bpf *mount_bpf_obj;
extern struct shm_bpf *shm_bpf_obj;
extern struct socket_bpf *socket_bpf_obj;
extern struct swap_bpf *bpf_obj;
extern struct vfs_bpf *vfs_bpf_obj;
#endif
typedef struct netdata_syscall_stat {
unsigned long bytes; // total number of bytes
uint64_t call; // total number of calls
uint64_t ecall; // number of calls that returned error
struct netdata_syscall_stat *next; // Link list
} netdata_syscall_stat_t;
typedef uint64_t netdata_idx_t;
typedef struct netdata_publish_syscall {
char *dimension;
char *name;
char *algorithm;
unsigned long nbyte;
unsigned long pbyte;
uint64_t ncall;
uint64_t pcall;
uint64_t nerr;
uint64_t perr;
struct netdata_publish_syscall *next;
} netdata_publish_syscall_t;
typedef struct netdata_publish_vfs_common {
long write;
long read;
long running;
long zombie;
} netdata_publish_vfs_common_t;
typedef struct netdata_error_report {
char comm[16];
__u32 pid;
int type;
int err;
} netdata_error_report_t;
extern ebpf_module_t ebpf_modules[];
enum ebpf_main_index {
EBPF_MODULE_PROCESS_IDX,
EBPF_MODULE_SOCKET_IDX,
EBPF_MODULE_CACHESTAT_IDX,
EBPF_MODULE_SYNC_IDX,
EBPF_MODULE_DCSTAT_IDX,
EBPF_MODULE_SWAP_IDX,
EBPF_MODULE_VFS_IDX,
EBPF_MODULE_FILESYSTEM_IDX,
EBPF_MODULE_DISK_IDX,
EBPF_MODULE_MOUNT_IDX,
EBPF_MODULE_FD_IDX,
EBPF_MODULE_HARDIRQ_IDX,
EBPF_MODULE_SOFTIRQ_IDX,
EBPF_MODULE_OOMKILL_IDX,
EBPF_MODULE_SHM_IDX,
EBPF_MODULE_MDFLUSH_IDX,
/* THREADS MUST BE INCLUDED BEFORE THIS COMMENT */
EBPF_OPTION_ALL_CHARTS,
EBPF_OPTION_VERSION,
EBPF_OPTION_HELP,
EBPF_OPTION_GLOBAL_CHART,
EBPF_OPTION_RETURN_MODE,
EBPF_OPTION_LEGACY,
EBPF_OPTION_CORE,
EBPF_OPTION_UNITTEST
};
typedef struct ebpf_tracepoint {
bool enabled;
char *class;
char *event;
} ebpf_tracepoint_t;
// Copied from musl header
#ifndef offsetof
#if __GNUC__ > 3
#define offsetof(type, member) __builtin_offsetof(type, member)
#else
#define offsetof(type, member) ((size_t)((char *)&(((type *)0)->member) - (char *)0))
#endif
#endif
// Messages
#define NETDATA_EBPF_DEFAULT_FNT_NOT_FOUND "Cannot find the necessary functions to monitor"
// Chart definitions
#define NETDATA_EBPF_FAMILY "ebpf"
#define NETDATA_EBPF_IP_FAMILY "ip"
#define NETDATA_FILESYSTEM_FAMILY "filesystem"
#define NETDATA_EBPF_MOUNT_GLOBAL_FAMILY "mount_points"
#define NETDATA_EBPF_CHART_TYPE_LINE "line"
#define NETDATA_EBPF_CHART_TYPE_STACKED "stacked"
#define NETDATA_EBPF_MEMORY_GROUP "mem"
#define NETDATA_EBPF_SYSTEM_GROUP "system"
#define NETDATA_SYSTEM_SWAP_SUBMENU "swap"
#define NETDATA_SYSTEM_CGROUP_SWAP_SUBMENU "swap (eBPF)"
#define NETDATA_SYSTEM_IPC_SHM_SUBMENU "ipc shared memory"
#define NETDATA_MONITORING_FAMILY "netdata"
// Statistics charts
#define NETDATA_EBPF_THREADS "ebpf_threads"
#define NETDATA_EBPF_LOAD_METHOD "ebpf_load_methods"
#define NETDATA_EBPF_KERNEL_MEMORY "ebpf_kernel_memory"
#define NETDATA_EBPF_HASH_TABLES_LOADED "ebpf_hash_tables_count"
#define NETDATA_EBPF_HASH_TABLES_PER_CORE "ebpf_hash_tables_per_core"
// Log file
#define NETDATA_DEVELOPER_LOG_FILE "developer.log"
// Maximum number of processors monitored on perf events
#define NETDATA_MAX_PROCESSOR 512
// Kernel versions calculated with the formula:
// R = MAJOR*65536 + MINOR*256 + PATCH
#define NETDATA_KERNEL_V5_3 328448
#define NETDATA_KERNEL_V4_15 265984
#define EBPF_SYS_CLONE_IDX 11
#define EBPF_MAX_MAPS 32
#define EBPF_DEFAULT_UPDATE_EVERY 10
enum ebpf_algorithms_list {
NETDATA_EBPF_ABSOLUTE_IDX,
NETDATA_EBPF_INCREMENTAL_IDX
};
// Threads
void *ebpf_process_thread(void *ptr);
void *ebpf_socket_thread(void *ptr);
// Common variables
extern pthread_mutex_t lock;
extern pthread_mutex_t ebpf_exit_cleanup;
extern int ebpf_nprocs;
extern int running_on_kernel;
extern int isrh;
extern char *ebpf_plugin_dir;
extern int process_pid_fd;
extern pthread_mutex_t collect_data_mutex;
// Common functions
void ebpf_global_labels(netdata_syscall_stat_t *is,
netdata_publish_syscall_t *pio,
char **dim,
char **name,
int *algorithm,
int end);
void ebpf_write_chart_cmd(char *type,
char *id,
char *title,
char *units,
char *family,
char *charttype,
char *context,
int order,
int update_every,
char *module);
void ebpf_write_global_dimension(char *name, char *id, char *algorithm);
void ebpf_create_global_dimension(void *ptr, int end);
void ebpf_create_chart(char *type,
char *id,
char *title,
char *units,
char *family,
char *context,
char *charttype,
int order,
void (*ncd)(void *, int),
void *move,
int end,
int update_every,
char *module);
void write_begin_chart(char *family, char *name);
void write_chart_dimension(char *dim, long long value);
void write_count_chart(char *name, char *family, netdata_publish_syscall_t *move, uint32_t end);
void write_err_chart(char *name, char *family, netdata_publish_syscall_t *move, int end);
void write_io_chart(char *chart, char *family, char *dwrite, long long vwrite,
char *dread, long long vread);
void ebpf_create_charts_on_apps(char *name,
char *title,
char *units,
char *family,
char *charttype,
int order,
char *algorithm,
struct ebpf_target *root,
int update_every,
char *module);
void write_end_chart();
int ebpf_enable_tracepoint(ebpf_tracepoint_t *tp);
int ebpf_disable_tracepoint(ebpf_tracepoint_t *tp);
uint32_t ebpf_enable_tracepoints(ebpf_tracepoint_t *tps);
void ebpf_pid_file(char *filename, size_t length);
#define EBPF_PROGRAMS_SECTION "ebpf programs"
#define EBPF_COMMON_DIMENSION_PERCENTAGE "%"
#define EBPF_COMMON_DIMENSION_CALL "calls/s"
#define EBPF_COMMON_DIMENSION_CONNECTIONS "connections/s"
#define EBPF_COMMON_DIMENSION_BITS "kilobits/s"
#define EBPF_COMMON_DIMENSION_BYTES "bytes/s"
#define EBPF_COMMON_DIMENSION_DIFFERENCE "difference"
#define EBPF_COMMON_DIMENSION_PACKETS "packets"
#define EBPF_COMMON_DIMENSION_FILES "files"
#define EBPF_COMMON_DIMENSION_MILLISECONDS "milliseconds"
#define EBPF_COMMON_DIMENSION_KILLS "kills"
// Common variables
extern int debug_enabled;
extern struct ebpf_pid_stat *ebpf_root_of_pids;
extern ebpf_cgroup_target_t *ebpf_cgroup_pids;
extern char *ebpf_algorithms[];
extern struct config collector_config;
extern netdata_ebpf_cgroup_shm_t shm_ebpf_cgroup;
extern int shm_fd_ebpf_cgroup;
extern sem_t *shm_sem_ebpf_cgroup;
extern pthread_mutex_t mutex_cgroup_shm;
extern size_t ebpf_all_pids_count;
extern ebpf_plugin_stats_t plugin_statistics;
#ifdef LIBBPF_MAJOR_VERSION
extern struct btf *default_btf;
#else
extern void *default_btf;
#endif
// Socket functions and variables
// Common functions
void ebpf_process_create_apps_charts(struct ebpf_module *em, void *ptr);
void ebpf_socket_create_apps_charts(struct ebpf_module *em, void *ptr);
void ebpf_cachestat_create_apps_charts(struct ebpf_module *em, void *root);
void ebpf_one_dimension_write_charts(char *family, char *chart, char *dim, long long v1);
collected_number get_value_from_structure(char *basis, size_t offset);
void ebpf_update_pid_table(ebpf_local_maps_t *pid, ebpf_module_t *em);
void ebpf_write_chart_obsolete(char *type, char *id, char *title, char *units, char *family,
char *charttype, char *context, int order, int update_every);
void write_histogram_chart(char *family, char *name, const netdata_idx_t *hist, char **dimensions, uint32_t end);
void ebpf_update_disabled_plugin_stats(ebpf_module_t *em);
ARAL *ebpf_allocate_pid_aral(char *name, size_t size);
void ebpf_unload_legacy_code(struct bpf_object *objects, struct bpf_link **probe_links);
extern ebpf_filesystem_partitions_t localfs[];
extern ebpf_sync_syscalls_t local_syscalls[];
extern int ebpf_exit_plugin;
#define EBPF_MAX_SYNCHRONIZATION_TIME 300
#endif /* NETDATA_COLLECTOR_EBPF_H */
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