diff options
Diffstat (limited to 'libnetdata/ebpf/ebpf.h')
| -rw-r--r-- | libnetdata/ebpf/ebpf.h | 76 |
1 files changed, 68 insertions, 8 deletions
diff --git a/libnetdata/ebpf/ebpf.h b/libnetdata/ebpf/ebpf.h index bc55d9595..73128f529 100644 --- a/libnetdata/ebpf/ebpf.h +++ b/libnetdata/ebpf/ebpf.h @@ -5,6 +5,7 @@ #include <bpf/bpf.h> #include <bpf/libbpf.h> +#include <stdlib.h> // Necessary for stdtoul #define NETDATA_DEBUGFS "/sys/kernel/debug/tracing/" #define NETDATA_KALLSYMS "/proc/kallsyms" @@ -14,10 +15,12 @@ #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_UPDATE_EVERY "update every" #define EBPF_CFG_PID_SIZE "pid table size" #define EBPF_CFG_APPLICATION "apps" +#define EBPF_CFG_CGROUP "cgroups" /** * The next magic number is got doing the following math: @@ -57,6 +60,13 @@ #define NETDATA_EBPF_KERNEL_5_10 330240 /** + * Kernel 5.0 + * + * 327680 = 5*65536 +256*0 + */ +#define NETDATA_EBPF_KERNEL_5_0 327680 + +/** * Kernel 4.17 * * 266496 = 4*65536 + 17*256 @@ -80,6 +90,16 @@ #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; +} ebpf_addresses_t; + extern char *ebpf_user_config_dir; extern char *ebpf_stock_config_dir; @@ -99,10 +119,26 @@ typedef enum { #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_END +}; + typedef struct ebpf_local_maps { char *name; uint32_t internal_input; uint32_t user_input; + uint32_t type; + int map_fd; } ebpf_local_maps_t; typedef struct ebpf_specify_name { @@ -117,9 +153,10 @@ typedef struct ebpf_module { const char *config_name; int enabled; void *(*start_routine)(void *); - int update_time; + int update_every; int global_charts; int apps_charts; + int cgroup_charts; netdata_run_mode_t mode; uint32_t thread_id; int optional; @@ -127,23 +164,46 @@ typedef struct ebpf_module { ebpf_local_maps_t *maps; ebpf_specify_name_t *names; uint32_t pid_map_size; + struct config *cfg; + const char *config_file; } ebpf_module_t; -extern int get_kernel_version(char *out, int size); +extern int ebpf_get_kernel_version(); extern int get_redhat_release(); extern int has_condition_to_run(int version); extern char *ebpf_kernel_suffix(int version, int isrh); -extern int ebpf_update_kernel(ebpf_data_t *ef); +extern void ebpf_update_kernel(char *ks, size_t length, int isrh, int version); extern struct bpf_link **ebpf_load_program(char *plugins_dir, ebpf_module_t *em, char *kernel_string, - struct bpf_object **obj, - int *map_fd); + struct bpf_object **obj); -extern void ebpf_mount_config_name(char *filename, size_t length, char *path, char *config); +extern void ebpf_mount_config_name(char *filename, size_t length, char *path, const char *config); extern int ebpf_load_config(struct config *config, char *filename); -extern void ebpf_update_module_using_config(ebpf_module_t *modules, struct config *cfg); -extern void ebpf_update_module(ebpf_module_t *em, struct config *cfg, char *cfg_file); +extern void ebpf_update_module(ebpf_module_t *em); extern void ebpf_update_names(ebpf_specify_name_t *opt, ebpf_module_t *em); +extern void ebpf_load_addresses(ebpf_addresses_t *fa, int fd); +extern void ebpf_fill_algorithms(int *algorithms, size_t length, int algorithm); +extern char **ebpf_fill_histogram_dimension(size_t maximum); + +// 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; + int order; + uint64_t histogram[NETDATA_EBPF_HIST_MAX_BINS]; +} netdata_ebpf_histogram_t; + +extern 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 +extern int ebpf_is_tracepoint_enabled(char *subsys, char *eventname); +extern int ebpf_enable_tracing_values(char *subsys, char *eventname); +extern int ebpf_disable_tracing_values(char *subsys, char *eventname); #endif /* NETDATA_EBPF_H */ |