summaryrefslogtreecommitdiffstats
path: root/libnetdata/ebpf/ebpf.h
diff options
context:
space:
mode:
Diffstat (limited to 'libnetdata/ebpf/ebpf.h')
-rw-r--r--libnetdata/ebpf/ebpf.h487
1 files changed, 0 insertions, 487 deletions
diff --git a/libnetdata/ebpf/ebpf.h b/libnetdata/ebpf/ebpf.h
deleted file mode 100644
index 9218cb9d7..000000000
--- a/libnetdata/ebpf/ebpf.h
+++ /dev/null
@@ -1,487 +0,0 @@
-// SPDX-License-Identifier: GPL-3.0-or-later
-
-#ifndef NETDATA_EBPF_H
-#define NETDATA_EBPF_H 1
-
-#include <bpf/bpf.h>
-#include <bpf/libbpf.h>
-#ifdef LIBBPF_DEPRECATED
-#include <bpf/btf.h>
-#include <linux/btf.h>
-#endif
-#include <stdlib.h> // Necessary for stdtoul
-#include "libnetdata/aral/aral.h"
-
-#define NETDATA_DEBUGFS "/sys/kernel/debug/tracing/"
-#define NETDATA_KALLSYMS "/proc/kallsyms"
-
-// Config files
-#define EBPF_GLOBAL_SECTION "global"
-#define EBPF_CFG_LOAD_MODE "ebpf load mode"
-#define EBPF_CFG_LOAD_MODE_DEFAULT "entry"
-#define EBPF_CFG_LOAD_MODE_RETURN "return"
-#define EBPF_MAX_MODE_LENGTH 6
-
-#define EBPF_CFG_TYPE_FORMAT "ebpf type format"
-#define EBPF_CFG_DEFAULT_PROGRAM "auto"
-#define EBPF_CFG_CORE_PROGRAM "CO-RE"
-#define EBPF_CFG_LEGACY_PROGRAM "legacy"
-
-#define EBPF_CFG_COLLECT_PID "collect pid"
-#define EBPF_CFG_PID_REAL_PARENT "real parent"
-#define EBPF_CFG_PID_PARENT "parent"
-#define EBPF_CFG_PID_ALL "all"
-#define EBPF_CFG_PID_INTERNAL_USAGE "not used"
-
-#define EBPF_CFG_CORE_ATTACH "ebpf co-re tracing"
-#define EBPF_CFG_ATTACH_TRAMPOLINE "trampoline"
-#define EBPF_CFG_ATTACH_TRACEPOINT "tracepoint"
-#define EBPF_CFG_ATTACH_PROBE "probe"
-
-#define EBPF_CFG_PROGRAM_PATH "btf path"
-
-#define EBPF_CFG_MAPS_PER_CORE "maps per core"
-
-#define EBPF_CFG_UPDATE_EVERY "update every"
-#define EBPF_CFG_LIFETIME "lifetime"
-#define EBPF_CFG_UPDATE_APPS_EVERY_DEFAULT 10
-#define EBPF_CFG_PID_SIZE "pid table size"
-#define EBPF_CFG_APPLICATION "apps"
-#define EBPF_CFG_CGROUP "cgroups"
-
-#define EBPF_COMMON_FNCT_CLEAN_UP "release_task"
-
-/**
- * The RedHat magic number was got doing:
- *
- * 1797 = 7*256 + 5
- *
- * For more details, please, read /usr/include/linux/version.h
- * in any Red Hat installation.
- */
-#define NETDATA_MINIMUM_RH_VERSION 1797
-
-/**
- * 2048 = 8*256 + 0
- */
-#define NETDATA_RH_8 2048
-
-/**
- * Kernel Version
- *
- * Kernel versions are calculated using the following formula:
- *
- * VERSION = LINUX_VERSION_MAJOR*65536 + LINUX_VERSION_PATCHLEVEL*256 + LINUX_VERSION_SUBLEVEL
- *
- * Where LINUX_VERSION_MAJOR, LINUX_VERSION_PATCHLEVEL, and LINUX_VERSION_SUBLEVEL are extracted
- * from /usr/include/linux/version.h.
- *
- * LINUX_VERSION_SUBLEVEL has the maximum value 255, but linux can have more SUBLEVELS.
- *
- */
-enum netdata_ebpf_kernel_versions {
- NETDATA_EBPF_KERNEL_4_06 = 263680, // 264960 = 4 * 65536 + 6 * 256
- NETDATA_EBPF_KERNEL_4_11 = 264960, // 264960 = 4 * 65536 + 15 * 256
- NETDATA_EBPF_KERNEL_4_14 = 265728, // 264960 = 4 * 65536 + 14 * 256
- NETDATA_EBPF_KERNEL_4_15 = 265984, // 265984 = 4 * 65536 + 15 * 256
- NETDATA_EBPF_KERNEL_4_17 = 266496, // 266496 = 4 * 65536 + 17 * 256
- NETDATA_EBPF_KERNEL_5_0 = 327680, // 327680 = 5 * 65536 + 0 * 256
- NETDATA_EBPF_KERNEL_5_4 = 328704, // 327680 = 5 * 65536 + 4 * 256
- NETDATA_EBPF_KERNEL_5_5 = 328960, // 327680 = 5 * 65536 + 5 * 256
- NETDATA_EBPF_KERNEL_5_10 = 330240, // 330240 = 5 * 65536 + 10 * 256
- NETDATA_EBPF_KERNEL_5_11 = 330496, // 330240 = 5 * 65536 + 11 * 256
- NETDATA_EBPF_KERNEL_5_14 = 331264, // 331264 = 5 * 65536 + 14 * 256
- NETDATA_EBPF_KERNEL_5_15 = 331520, // 331520 = 5 * 65536 + 15 * 256
- NETDATA_EBPF_KERNEL_5_16 = 331776 // 331776 = 5 * 65536 + 16 * 256
-};
-
-enum netdata_kernel_flag {
- NETDATA_V3_10 = 1 << 0,
- NETDATA_V4_14 = 1 << 1,
- NETDATA_V4_16 = 1 << 2,
- NETDATA_V4_18 = 1 << 3,
- NETDATA_V5_4 = 1 << 4,
- NETDATA_V5_10 = 1 << 5,
- NETDATA_V5_11 = 1 << 6,
- NETDATA_V5_14 = 1 << 7,
- NETDATA_V5_15 = 1 << 8,
- NETDATA_V5_16 = 1 << 9
-};
-
-enum netdata_kernel_idx {
- NETDATA_IDX_V3_10,
- NETDATA_IDX_V4_14,
- NETDATA_IDX_V4_16,
- NETDATA_IDX_V4_18,
- NETDATA_IDX_V5_4 ,
- NETDATA_IDX_V5_10,
- NETDATA_IDX_V5_11,
- NETDATA_IDX_V5_14,
- NETDATA_IDX_V5_15,
- NETDATA_IDX_V5_16
-};
-
-#define NETDATA_IDX_STR_V3_10 "3.10"
-#define NETDATA_IDX_STR_V4_14 "4.14"
-#define NETDATA_IDX_STR_V4_16 "4.16"
-#define NETDATA_IDX_STR_V4_18 "4.18"
-#define NETDATA_IDX_STR_V5_4 "5.4"
-#define NETDATA_IDX_STR_V5_10 "5.10"
-#define NETDATA_IDX_STR_V5_11 "5.11"
-#define NETDATA_IDX_STR_V5_14 "5.14"
-#define NETDATA_IDX_STR_V5_15 "5.15"
-#define NETDATA_IDX_STR_V5_16 "5.16"
-
-/**
- * Minimum value has relationship with libbpf support.
- */
-#define NETDATA_MINIMUM_EBPF_KERNEL NETDATA_EBPF_KERNEL_4_11
-
-#define VERSION_STRING_LEN 256
-#define EBPF_KERNEL_REJECT_LIST_FILE "ebpf_kernel_reject_list.txt"
-
-#define ND_EBPF_DEFAULT_MIN_PID 1U
-#define ND_EBPF_MAP_FD_NOT_INITIALIZED (int)-1
-
-typedef struct ebpf_addresses {
- char *function;
- uint32_t hash;
- // We use long as address, because it matches system length
- unsigned long addr;
- uint32_t type;
-} ebpf_addresses_t;
-
-extern char *ebpf_user_config_dir;
-extern char *ebpf_stock_config_dir;
-
-typedef struct ebpf_data {
- int *map_fd;
-
- char *kernel_string;
- uint32_t running_on_kernel;
- int isrh;
-} ebpf_data_t;
-
-typedef enum {
- MODE_RETURN = 0, // This attaches kprobe when the function returns
- MODE_DEVMODE, // This stores log given description about the errors raised
- MODE_ENTRY // This attaches kprobe when the function is called
-} netdata_run_mode_t;
-
-#define ND_EBPF_DEFAULT_PID_SIZE 32768U
-
-enum netdata_ebpf_map_type {
- NETDATA_EBPF_MAP_STATIC = 0,
- NETDATA_EBPF_MAP_RESIZABLE = 1,
- NETDATA_EBPF_MAP_CONTROLLER = 2,
- NETDATA_EBPF_MAP_CONTROLLER_UPDATED = 4,
- NETDATA_EBPF_MAP_PID = 8
-};
-
-enum netdata_controller {
- NETDATA_CONTROLLER_APPS_ENABLED,
- NETDATA_CONTROLLER_APPS_LEVEL,
-
- // These index show the number of elements
- // stored inside hash tables.
- //
- // We have indexes to count increase and
- // decrease events, because __sync_fetch_and_sub
- // generates compilation errors.
- NETDATA_CONTROLLER_PID_TABLE_ADD,
- NETDATA_CONTROLLER_PID_TABLE_DEL,
- NETDATA_CONTROLLER_TEMP_TABLE_ADD,
- NETDATA_CONTROLLER_TEMP_TABLE_DEL,
-
- NETDATA_CONTROLLER_END
-};
-
-// Control how Netdata will monitor PIDs (apps and cgroups)
-typedef enum netdata_apps_level {
- NETDATA_APPS_LEVEL_REAL_PARENT,
- NETDATA_APPS_LEVEL_PARENT,
- NETDATA_APPS_LEVEL_ALL,
-
- // Present only in user ring
- NETDATA_APPS_NOT_SET
-} netdata_apps_level_t;
-
-typedef struct ebpf_local_maps {
- char *name;
- uint32_t internal_input;
- uint32_t user_input;
- uint32_t type;
- int map_fd;
-#ifdef LIBBPF_MAJOR_VERSION
- enum bpf_map_type map_type;
-#endif
-} ebpf_local_maps_t;
-
-typedef struct ebpf_specify_name {
- char *program_name;
- char *function_to_attach;
- char *optional;
- bool retprobe;
-} ebpf_specify_name_t;
-
-typedef enum netdata_ebpf_load_mode {
- EBPF_LOAD_LEGACY = 1<<0, // Select legacy mode, this means we will load binaries
- EBPF_LOAD_CORE = 1<<1, // When CO-RE is used, it is necessary to use the source code
- EBPF_LOAD_PLAY_DICE = 1<<2, // Take a look on environment and choose the best option
- EBPF_LOADED_FROM_STOCK = 1<<3, // Configuration loaded from Stock file
- EBPF_LOADED_FROM_USER = 1<<4 // Configuration loaded from user
-} netdata_ebpf_load_mode_t;
-#define NETDATA_EBPF_LOAD_METHODS (EBPF_LOAD_LEGACY|EBPF_LOAD_CORE|EBPF_LOAD_PLAY_DICE)
-#define NETDATA_EBPF_LOAD_SOURCE (EBPF_LOADED_FROM_STOCK|EBPF_LOADED_FROM_USER)
-
-typedef enum netdata_ebpf_program_loaded {
- EBPF_LOAD_PROBE, // Attach probes on targets
- EBPF_LOAD_RETPROBE, // Attach retprobes on targets
- EBPF_LOAD_TRACEPOINT, // This stores log given description about the errors raised
- EBPF_LOAD_TRAMPOLINE, // This attaches kprobe when the function is called
-} netdata_ebpf_program_loaded_t;
-
-typedef struct netdata_ebpf_targets {
- char *name;
- netdata_ebpf_program_loaded_t mode;
-} netdata_ebpf_targets_t;
-
-typedef struct ebpf_plugin_stats {
- // Load options
- uint32_t legacy; // Legacy codes
- uint32_t core; // CO-RE codes, this means we are using source code compiled.
-
- uint32_t threads; // Total number of threads
- uint32_t running; // total number of threads running
-
- uint32_t probes; // Number of kprobes loaded
- uint32_t retprobes; // Number of kretprobes loaded
- uint32_t tracepoints; // Number of tracepoints used
- uint32_t trampolines; // Number of trampolines used
-
- uint64_t memlock_kern; // The same information reported by bpftool, but it is not accurated
- // https://lore.kernel.org/linux-mm/20230112155326.26902-5-laoar.shao@gmail.com/T/
- uint32_t hash_tables; // Number of hash tables used on the system.
-
- uint32_t hash_percpu; // Number of threads running per cpu maps
- uint32_t hash_unique; // Number of threads running an unique map for all cores.
-} ebpf_plugin_stats_t;
-
-typedef enum ebpf_stats_action {
- EBPF_ACTION_STAT_ADD,
- EBPF_ACTION_STAT_REMOVE,
-} ebpf_stats_action_t;
-
-typedef enum netdata_apps_integration_flags {
- NETDATA_EBPF_APPS_FLAG_NO,
- NETDATA_EBPF_APPS_FLAG_YES,
- NETDATA_EBPF_APPS_FLAG_CHART_CREATED
-} netdata_apps_integration_flags_t;
-
-#define NETDATA_EBPF_CHART_MEM_LENGTH 48
-#define NETDATA_EBPF_STAT_DIMENSION_MEMORY "memory"
-#define NETDATA_EBPF_STAT_DIMENSION_ARAL "aral"
-
-enum ebpf_threads_status {
- NETDATA_THREAD_EBPF_RUNNING, // started by plugin
- NETDATA_THREAD_EBPF_FUNCTION_RUNNING, // started by function
- NETDATA_THREAD_EBPF_STOPPING, // stopping thread
- NETDATA_THREAD_EBPF_STOPPED, // thread stopped
- NETDATA_THREAD_EBPF_NOT_RUNNING // thread was never started
-};
-
-enum ebpf_global_table_values {
- NETDATA_EBPF_GLOBAL_TABLE_PID_TABLE_ADD, // Count elements added inside PID table
- NETDATA_EBPF_GLOBAL_TABLE_PID_TABLE_DEL, // Count elements removed from PID table
- NETDATA_EBPF_GLOBAL_TABLE_TEMP_TABLE_ADD, // Count elements added inside TEMP table
- NETDATA_EBPF_GLOBAL_TABLE_TEMP_TABLE_DEL, // Count elements removed from TEMP table
-
- NETDATA_EBPF_GLOBAL_TABLE_STATUS_END
-};
-
-typedef uint64_t netdata_idx_t;
-
-typedef struct ebpf_module {
- // Constants used with module
- struct {
- const char *thread_name;
- const char *config_name;
- const char *thread_description;
- } info;
-
- // Helpers used with plugin
- struct {
- void *(*start_routine)(void *); // the thread function
- void (*apps_routine)(struct ebpf_module *em, void *ptr); // the apps charts
- void (*fnct_routine)(BUFFER *bf, struct ebpf_module *em); // the function used for exteernal requests
- const char *fcnt_name; // name given to cloud
- const char *fcnt_desc; // description given about function
- const char *fcnt_thread_chart_name;
- int order_thread_chart;
- const char *fcnt_thread_lifetime_name;
- int order_thread_lifetime;
- } functions;
-
- enum ebpf_threads_status enabled;
- int update_every;
- int global_charts;
- netdata_apps_integration_flags_t apps_charts;
- netdata_apps_level_t apps_level;
- int cgroup_charts;
- netdata_run_mode_t mode;
- uint32_t thread_id;
- int optional;
- ebpf_local_maps_t *maps;
- ebpf_specify_name_t *names;
- uint32_t pid_map_size;
- struct config *cfg;
- const char *config_file;
- uint64_t kernels;
- netdata_ebpf_load_mode_t load;
- netdata_ebpf_targets_t *targets;
- struct bpf_link **probe_links;
- struct bpf_object *objects;
- struct netdata_static_thread *thread;
-
- // charts
- char memory_usage[NETDATA_EBPF_CHART_MEM_LENGTH];
- char memory_allocations[NETDATA_EBPF_CHART_MEM_LENGTH];
- int maps_per_core;
-
- // period to run
- uint32_t running_time; // internal usage, this is used to reset a value when a new request happens.
- uint32_t lifetime;
-
- netdata_idx_t hash_table_stats[NETDATA_EBPF_GLOBAL_TABLE_STATUS_END];
-} ebpf_module_t;
-
-#define EBPF_DEFAULT_LIFETIME 300
-// This will be present until all functions are merged. The deadline is planned for 68 years since plugin start
-#define EBPF_NON_FUNCTION_LIFE_TIME UINT_MAX
-
-int ebpf_get_kernel_version();
-int get_redhat_release();
-int has_condition_to_run(int version);
-char *ebpf_kernel_suffix(int version, int isrh);
-struct bpf_link **ebpf_load_program(char *plugins_dir, ebpf_module_t *em, int kver, int is_rhf,
- struct bpf_object **obj);
-
-void ebpf_mount_config_name(char *filename, size_t length, char *path, const char *config);
-int ebpf_load_config(struct config *config, char *filename);
-void ebpf_update_module(ebpf_module_t *em, struct btf *btf_file, int kver, int is_rh);
-void ebpf_update_names(ebpf_specify_name_t *opt, ebpf_module_t *em);
-void ebpf_adjust_apps_cgroup(ebpf_module_t *em, netdata_ebpf_program_loaded_t mode);
-char *ebpf_find_symbol(char *search);
-void ebpf_load_addresses(ebpf_addresses_t *fa, int fd);
-void ebpf_fill_algorithms(int *algorithms, size_t length, int algorithm);
-char **ebpf_fill_histogram_dimension(size_t maximum);
-void ebpf_update_stats(ebpf_plugin_stats_t *report, ebpf_module_t *em);
-void ebpf_update_controller(int fd, ebpf_module_t *em);
-void ebpf_update_map_size(struct bpf_map *map, ebpf_local_maps_t *lmap, ebpf_module_t *em, const char *map_name);
-
-// Histogram
-#define NETDATA_EBPF_HIST_MAX_BINS 24UL
-#define NETDATA_DISK_MAX 256U
-#define NETDATA_DISK_HISTOGRAM_LENGTH (NETDATA_DISK_MAX * NETDATA_EBPF_HIST_MAX_BINS)
-
-typedef struct netdata_ebpf_histogram {
- char *name;
- char *title;
- char *ctx;
- int order;
- uint64_t histogram[NETDATA_EBPF_HIST_MAX_BINS];
-} netdata_ebpf_histogram_t;
-
-enum fs_btf_counters {
- NETDATA_KEY_BTF_READ,
- NETDATA_KEY_BTF_WRITE,
- NETDATA_KEY_BTF_OPEN,
- NETDATA_KEY_BTF_SYNC_ATTR,
- NETDATA_KEY_BTF_OPEN2,
-
- NETDATA_FS_BTF_END
-};
-
-typedef struct ebpf_filesystem_partitions {
- char *filesystem;
- char *optional_filesystem;
- char *family;
- char *family_name;
- struct bpf_object *objects;
- struct bpf_link **probe_links;
-
- netdata_ebpf_histogram_t hread;
- netdata_ebpf_histogram_t hwrite;
- netdata_ebpf_histogram_t hopen;
- netdata_ebpf_histogram_t hadditional;
-
- uint32_t flags;
- uint32_t enabled;
-
- ebpf_addresses_t addresses;
- uint64_t kernels;
- ebpf_local_maps_t *fs_maps;
-
- // BPF structure
-#ifdef LIBBPF_MAJOR_VERSION
- struct filesystem_bpf *fs_obj;
-#else
- void *fs_obj;
-#endif
- const char *functions[NETDATA_FS_BTF_END];
-} ebpf_filesystem_partitions_t;
-
-typedef struct ebpf_sync_syscalls {
- char *syscall;
- int enabled;
- uint32_t flags;
-
- // BTF structure
- struct bpf_object *objects;
- struct bpf_link **probe_links;
-
- // BPF structure
-#ifdef LIBBPF_MAJOR_VERSION
- struct sync_bpf *sync_obj;
-#else
- void *sync_obj;
-#endif
- ebpf_local_maps_t *sync_maps;
-} ebpf_sync_syscalls_t;
-
-void ebpf_histogram_dimension_cleanup(char **ptr, size_t length);
-
-// Tracepoint helpers
-// For more information related to tracepoints read https://www.kernel.org/doc/html/latest/trace/tracepoints.html
-int ebpf_is_tracepoint_enabled(char *subsys, char *eventname);
-int ebpf_enable_tracing_values(char *subsys, char *eventname);
-int ebpf_disable_tracing_values(char *subsys, char *eventname);
-
-// BTF Section
-#define EBPF_DEFAULT_BTF_FILE "vmlinux"
-#define EBPF_DEFAULT_BTF_PATH "/sys/kernel/btf"
-#define EBPF_DEFAULT_ERROR_MSG "Cannot open or load BPF file for thread"
-
-// BTF helpers
-#define NETDATA_EBPF_MAX_SYSCALL_LENGTH 255
-
-netdata_ebpf_load_mode_t epbf_convert_string_to_load_mode(char *str);
-netdata_ebpf_program_loaded_t ebpf_convert_core_type(char *str, netdata_run_mode_t lmode);
-void ebpf_select_host_prefix(char *output, size_t length, char *syscall, int kver);
-#ifdef LIBBPF_MAJOR_VERSION
-void ebpf_adjust_thread_load(ebpf_module_t *mod, struct btf *file);
-struct btf *ebpf_parse_btf_file(const char *filename);
-struct btf *ebpf_load_btf_file(char *path, char *filename);
-int ebpf_is_function_inside_btf(struct btf *file, char *function);
-void ebpf_update_map_type(struct bpf_map *map, ebpf_local_maps_t *w);
-void ebpf_define_map_type(ebpf_local_maps_t *maps, int maps_per_core, int kver);
-#endif
-
-void ebpf_update_kernel_memory_with_vector(ebpf_plugin_stats_t *report, ebpf_local_maps_t *maps,
- ebpf_stats_action_t action);
-void ebpf_update_kernel_memory(ebpf_plugin_stats_t *report, ebpf_local_maps_t *map, ebpf_stats_action_t action);
-int ebpf_statistic_create_aral_chart(char *name, ebpf_module_t *em);
-void ebpf_statistic_obsolete_aral_chart(ebpf_module_t *em, int prio);
-void ebpf_send_data_aral_chart(ARAL *memory, ebpf_module_t *em);
-
-#endif /* NETDATA_EBPF_H */
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-22 08:24:59 +0000