Adding upstream version 1.33.0.upstream/1.33.0

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 103 insertions, 60 deletions

diff --git a/collectors/ebpf.plugin/ebpf.c b/collectors/ebpf.plugin/ebpf.c
index 71a13e84..d51d378b 100644
--- a/collectors/ebpf.plugin/ebpf.c
+++ b/collectors/ebpf.plugin/ebpf.c
@@ -6,47 +6,10 @@
 
 #include "ebpf.h"
 #include "ebpf_socket.h"
+#include "libnetdata/required_dummies.h"
 
 /*****************************************************************
  *
- *  FUNCTIONS USED BY NETDATA
- *
- *****************************************************************/
-
-// callback required by eval()
-int health_variable_lookup(const char *variable, uint32_t hash, struct rrdcalc *rc, calculated_number *result)
-{
-    UNUSED(variable);
-    UNUSED(hash);
-    UNUSED(rc);
-    UNUSED(result);
-    return 0;
-};
-
-void send_statistics(const char *action, const char *action_result, const char *action_data)
-{
-    UNUSED(action);
-    UNUSED(action_result);
-    UNUSED(action_data);
-}
-
-// callbacks required by popen()
-void signals_block(void){};
-void signals_unblock(void){};
-void signals_reset(void){};
-
-// required by get_system_cpus()
-char *netdata_configured_host_prefix = "";
-
-// callback required by fatal()
-void netdata_cleanup_and_exit(int ret)
-{
-    exit(ret);
-}
-
-// ----------------------------------------------------------------------
-/*****************************************************************
- *
  *  GLOBAL VARIABLES
  *
  *****************************************************************/
@@ -64,7 +27,6 @@ struct config collector_config = { .first_section = NULL,
                                               .rwlock = AVL_LOCK_INITIALIZER } };
 
 int running_on_kernel = 0;
-char kernel_string[64];
 int ebpf_nprocs;
 int isrh = 0;
 uint32_t finalized_threads = 1;
@@ -79,94 +41,127 @@ ebpf_module_t ebpf_modules[] = {
       .cgroup_charts = CONFIG_BOOLEAN_NO, .mode = MODE_ENTRY, .optional = 0,
       .apps_routine = ebpf_process_create_apps_charts, .maps = NULL,
       .pid_map_size = ND_EBPF_DEFAULT_PID_SIZE, .names = NULL, .cfg = &process_config,
-      .config_file = NETDATA_PROCESS_CONFIG_FILE},
+      .config_file = NETDATA_PROCESS_CONFIG_FILE,
+      .kernels =  NETDATA_V3_10 | NETDATA_V4_14 | NETDATA_V4_16 | NETDATA_V4_18 | NETDATA_V5_4 | NETDATA_V5_10,
+      .load = EBPF_LOAD_LEGACY, .targets = NULL},
     { .thread_name = "socket", .config_name = "socket", .enabled = 0, .start_routine = ebpf_socket_thread,
       .update_every = EBPF_DEFAULT_UPDATE_EVERY, .global_charts = 1, .apps_charts = CONFIG_BOOLEAN_NO,
       .cgroup_charts = CONFIG_BOOLEAN_NO, .mode = MODE_ENTRY, .optional = 0,
       .apps_routine = ebpf_socket_create_apps_charts, .maps = NULL,
       .pid_map_size = ND_EBPF_DEFAULT_PID_SIZE, .names = NULL, .cfg = &socket_config,
-      .config_file = NETDATA_NETWORK_CONFIG_FILE},
+      .config_file = NETDATA_NETWORK_CONFIG_FILE,
+      .kernels =  NETDATA_V3_10 | NETDATA_V4_14 | NETDATA_V4_16 | NETDATA_V4_18 | NETDATA_V5_4,
+      .load = EBPF_LOAD_LEGACY, .targets = NULL},
     { .thread_name = "cachestat", .config_name = "cachestat", .enabled = 0, .start_routine = ebpf_cachestat_thread,
       .update_every = EBPF_DEFAULT_UPDATE_EVERY, .global_charts = 1, .apps_charts = CONFIG_BOOLEAN_NO,
       .cgroup_charts = CONFIG_BOOLEAN_NO, .mode = MODE_ENTRY, .optional = 0,
       .apps_routine = ebpf_cachestat_create_apps_charts, .maps = NULL,
       .pid_map_size = ND_EBPF_DEFAULT_PID_SIZE, .names = NULL, .cfg = &cachestat_config,
-      .config_file = NETDATA_CACHESTAT_CONFIG_FILE},
+      .config_file = NETDATA_CACHESTAT_CONFIG_FILE,
+      .kernels =  NETDATA_V3_10 | NETDATA_V4_14 | NETDATA_V4_16 | NETDATA_V4_18 | NETDATA_V5_4 | NETDATA_V5_15,
+      .load = EBPF_LOAD_LEGACY, .targets = NULL},
     { .thread_name = "sync", .config_name = "sync", .enabled = 0, .start_routine = ebpf_sync_thread,
       .update_every = EBPF_DEFAULT_UPDATE_EVERY, .global_charts = 1, .apps_charts = CONFIG_BOOLEAN_NO,
       .cgroup_charts = CONFIG_BOOLEAN_NO, .mode = MODE_ENTRY, .optional = 0, .apps_routine = NULL, .maps = NULL,
       .pid_map_size = ND_EBPF_DEFAULT_PID_SIZE, .names = NULL, .cfg = &sync_config,
-      .config_file = NETDATA_SYNC_CONFIG_FILE},
+      .config_file = NETDATA_SYNC_CONFIG_FILE,
+      // All syscalls have the same kernels
+      .kernels =  NETDATA_V3_10 | NETDATA_V4_14 | NETDATA_V4_16 | NETDATA_V4_18 | NETDATA_V5_4,
+      .load = EBPF_LOAD_LEGACY, .targets = NULL},
     { .thread_name = "dc", .config_name = "dc", .enabled = 0, .start_routine = ebpf_dcstat_thread,
       .update_every = EBPF_DEFAULT_UPDATE_EVERY, .global_charts = 1, .apps_charts = CONFIG_BOOLEAN_NO,
       .cgroup_charts = CONFIG_BOOLEAN_NO, .mode = MODE_ENTRY, .optional = 0,
       .apps_routine = ebpf_dcstat_create_apps_charts, .maps = NULL,
       .pid_map_size = ND_EBPF_DEFAULT_PID_SIZE, .names = NULL, .cfg = &dcstat_config,
-      .config_file = NETDATA_DIRECTORY_DCSTAT_CONFIG_FILE},
+      .config_file = NETDATA_DIRECTORY_DCSTAT_CONFIG_FILE,
+      .kernels =  NETDATA_V3_10 | NETDATA_V4_14 | NETDATA_V4_16 | NETDATA_V4_18 | NETDATA_V5_4,
+      .load = EBPF_LOAD_LEGACY, .targets = NULL},
     { .thread_name = "swap", .config_name = "swap", .enabled = 0, .start_routine = ebpf_swap_thread,
       .update_every = EBPF_DEFAULT_UPDATE_EVERY, .global_charts = 1, .apps_charts = CONFIG_BOOLEAN_NO,
       .cgroup_charts = CONFIG_BOOLEAN_NO, .mode = MODE_ENTRY, .optional = 0,
       .apps_routine = ebpf_swap_create_apps_charts, .maps = NULL,
       .pid_map_size = ND_EBPF_DEFAULT_PID_SIZE, .names = NULL, .cfg = &swap_config,
-      .config_file = NETDATA_DIRECTORY_SWAP_CONFIG_FILE},
+      .config_file = NETDATA_DIRECTORY_SWAP_CONFIG_FILE,
+      .kernels =  NETDATA_V3_10 | NETDATA_V4_14 | NETDATA_V4_16 | NETDATA_V4_18 | NETDATA_V5_4,
+      .load = EBPF_LOAD_LEGACY, .targets = NULL},
     { .thread_name = "vfs", .config_name = "vfs", .enabled = 0, .start_routine = ebpf_vfs_thread,
       .update_every = EBPF_DEFAULT_UPDATE_EVERY, .global_charts = 1, .apps_charts = CONFIG_BOOLEAN_NO,
       .cgroup_charts = CONFIG_BOOLEAN_NO, .mode = MODE_ENTRY, .optional = 0,
       .apps_routine = ebpf_vfs_create_apps_charts, .maps = NULL,
       .pid_map_size = ND_EBPF_DEFAULT_PID_SIZE, .names = NULL, .cfg = &vfs_config,
-      .config_file = NETDATA_DIRECTORY_VFS_CONFIG_FILE },
+      .config_file = NETDATA_DIRECTORY_VFS_CONFIG_FILE,
+      .kernels =  NETDATA_V3_10 | NETDATA_V4_14 | NETDATA_V4_16 | NETDATA_V4_18 | NETDATA_V5_4,
+      .load = EBPF_LOAD_LEGACY, .targets = NULL},
     { .thread_name = "filesystem", .config_name = "filesystem", .enabled = 0, .start_routine = ebpf_filesystem_thread,
       .update_every = EBPF_DEFAULT_UPDATE_EVERY, .global_charts = 1, .apps_charts = CONFIG_BOOLEAN_NO,
       .cgroup_charts = CONFIG_BOOLEAN_NO, .mode = MODE_ENTRY, .optional = 0, .apps_routine = NULL, .maps = NULL,
       .pid_map_size = ND_EBPF_DEFAULT_PID_SIZE, .names = NULL, .cfg = &fs_config,
-      .config_file = NETDATA_FILESYSTEM_CONFIG_FILE},
+      .config_file = NETDATA_FILESYSTEM_CONFIG_FILE,
+      //We are setting kernels as zero, because we load eBPF programs according the kernel running.
+      .kernels = 0, .load = EBPF_LOAD_LEGACY, .targets = NULL },
     { .thread_name = "disk", .config_name = "disk", .enabled = 0, .start_routine = ebpf_disk_thread,
       .update_every = EBPF_DEFAULT_UPDATE_EVERY, .global_charts = 1, .apps_charts = CONFIG_BOOLEAN_NO,
       .cgroup_charts = CONFIG_BOOLEAN_NO, .mode = MODE_ENTRY, .optional = 0, .apps_routine = NULL, .maps = NULL,
       .pid_map_size = ND_EBPF_DEFAULT_PID_SIZE, .names = NULL, .cfg = &disk_config,
-      .config_file = NETDATA_DISK_CONFIG_FILE},
+      .config_file = NETDATA_DISK_CONFIG_FILE,
+      .kernels =  NETDATA_V3_10 | NETDATA_V4_14 | NETDATA_V4_16 | NETDATA_V4_18 | NETDATA_V5_4,
+      .load = EBPF_LOAD_LEGACY, .targets = NULL},
     { .thread_name = "mount", .config_name = "mount", .enabled = 0, .start_routine = ebpf_mount_thread,
       .update_every = EBPF_DEFAULT_UPDATE_EVERY, .global_charts = 1, .apps_charts = CONFIG_BOOLEAN_NO,
       .cgroup_charts = CONFIG_BOOLEAN_NO, .mode = MODE_ENTRY, .optional = 0, .apps_routine = NULL, .maps = NULL,
       .pid_map_size = ND_EBPF_DEFAULT_PID_SIZE, .names = NULL, .cfg = &mount_config,
-      .config_file = NETDATA_MOUNT_CONFIG_FILE},
+      .config_file = NETDATA_MOUNT_CONFIG_FILE,
+      .kernels =  NETDATA_V3_10 | NETDATA_V4_14 | NETDATA_V4_16 | NETDATA_V4_18 | NETDATA_V5_4,
+      .load = EBPF_LOAD_LEGACY, .targets = NULL},
     { .thread_name = "fd", .config_name = "fd", .enabled = 0, .start_routine = ebpf_fd_thread,
       .update_every = EBPF_DEFAULT_UPDATE_EVERY, .global_charts = 1, .apps_charts = CONFIG_BOOLEAN_NO,
       .cgroup_charts = CONFIG_BOOLEAN_NO, .mode = MODE_ENTRY, .optional = 0,
       .apps_routine = ebpf_fd_create_apps_charts, .maps = NULL,
       .pid_map_size = ND_EBPF_DEFAULT_PID_SIZE, .names = NULL, .cfg = &fd_config,
-      .config_file = NETDATA_FD_CONFIG_FILE},
+      .config_file = NETDATA_FD_CONFIG_FILE,
+      .kernels =  NETDATA_V3_10 | NETDATA_V4_14 | NETDATA_V4_16 | NETDATA_V4_18 | NETDATA_V5_4 | NETDATA_V5_11,
+      .load = EBPF_LOAD_LEGACY, .targets = NULL},
     { .thread_name = "hardirq", .config_name = "hardirq", .enabled = 0, .start_routine = ebpf_hardirq_thread,
       .update_every = EBPF_DEFAULT_UPDATE_EVERY, .global_charts = 1, .apps_charts = CONFIG_BOOLEAN_NO,
       .cgroup_charts = CONFIG_BOOLEAN_NO, .mode = MODE_ENTRY, .optional = 0, .apps_routine = NULL, .maps = NULL,
       .pid_map_size = ND_EBPF_DEFAULT_PID_SIZE, .names = NULL, .cfg = &hardirq_config,
-      .config_file = NETDATA_HARDIRQ_CONFIG_FILE},
+      .config_file = NETDATA_HARDIRQ_CONFIG_FILE,
+      .kernels =  NETDATA_V3_10 | NETDATA_V4_14 | NETDATA_V4_16 | NETDATA_V4_18 | NETDATA_V5_4,
+      .load = EBPF_LOAD_LEGACY, .targets = NULL},
     { .thread_name = "softirq", .config_name = "softirq", .enabled = 0, .start_routine = ebpf_softirq_thread,
       .update_every = EBPF_DEFAULT_UPDATE_EVERY, .global_charts = 1, .apps_charts = CONFIG_BOOLEAN_NO,
       .cgroup_charts = CONFIG_BOOLEAN_NO, .mode = MODE_ENTRY, .optional = 0, .apps_routine = NULL, .maps = NULL,
       .pid_map_size = ND_EBPF_DEFAULT_PID_SIZE, .names = NULL, .cfg = &softirq_config,
-      .config_file = NETDATA_SOFTIRQ_CONFIG_FILE},
+      .config_file = NETDATA_SOFTIRQ_CONFIG_FILE,
+      .kernels =  NETDATA_V3_10 | NETDATA_V4_14 | NETDATA_V4_16 | NETDATA_V4_18 | NETDATA_V5_4,
+      .load = EBPF_LOAD_LEGACY, .targets = NULL},
     { .thread_name = "oomkill", .config_name = "oomkill", .enabled = 0, .start_routine = ebpf_oomkill_thread,
       .update_every = EBPF_DEFAULT_UPDATE_EVERY, .global_charts = 1, .apps_charts = CONFIG_BOOLEAN_NO,
       .cgroup_charts = CONFIG_BOOLEAN_NO, .mode = MODE_ENTRY, .optional = 0,
       .apps_routine = ebpf_oomkill_create_apps_charts, .maps = NULL,
       .pid_map_size = ND_EBPF_DEFAULT_PID_SIZE, .names = NULL, .cfg = &oomkill_config,
-      .config_file = NETDATA_OOMKILL_CONFIG_FILE},
+      .config_file = NETDATA_OOMKILL_CONFIG_FILE,
+      .kernels =  NETDATA_V3_10 | NETDATA_V4_14 | NETDATA_V4_16 | NETDATA_V4_18 | NETDATA_V5_4,
+      .load = EBPF_LOAD_LEGACY, .targets = NULL},
     { .thread_name = "shm", .config_name = "shm", .enabled = 0, .start_routine = ebpf_shm_thread,
       .update_every = EBPF_DEFAULT_UPDATE_EVERY, .global_charts = 1, .apps_charts = CONFIG_BOOLEAN_NO,
       .cgroup_charts = CONFIG_BOOLEAN_NO, .mode = MODE_ENTRY, .optional = 0,
       .apps_routine = ebpf_shm_create_apps_charts, .maps = NULL,
       .pid_map_size = ND_EBPF_DEFAULT_PID_SIZE, .names = NULL, .cfg = &shm_config,
-      .config_file = NETDATA_DIRECTORY_SHM_CONFIG_FILE},
+      .config_file = NETDATA_DIRECTORY_SHM_CONFIG_FILE,
+      .kernels =  NETDATA_V3_10 | NETDATA_V4_14 | NETDATA_V4_16 | NETDATA_V4_18 | NETDATA_V5_4,
+      .load = EBPF_LOAD_LEGACY, .targets = NULL},
     { .thread_name = "mdflush", .config_name = "mdflush", .enabled = 0, .start_routine = ebpf_mdflush_thread,
       .update_every = EBPF_DEFAULT_UPDATE_EVERY, .global_charts = 1, .apps_charts = CONFIG_BOOLEAN_NO,
       .cgroup_charts = CONFIG_BOOLEAN_NO, .mode = MODE_ENTRY, .optional = 0, .apps_routine = NULL, .maps = NULL,
       .pid_map_size = ND_EBPF_DEFAULT_PID_SIZE, .names = NULL, .cfg = &mdflush_config,
-      .config_file = NETDATA_DIRECTORY_MDFLUSH_CONFIG_FILE},
-      { .thread_name = NULL, .enabled = 0, .start_routine = NULL, .update_every = EBPF_DEFAULT_UPDATE_EVERY,
+      .config_file = NETDATA_DIRECTORY_MDFLUSH_CONFIG_FILE,
+      .kernels =  NETDATA_V3_10 | NETDATA_V4_14 | NETDATA_V4_16 | NETDATA_V4_18 | NETDATA_V5_4,
+      .load = EBPF_LOAD_LEGACY, .targets = NULL},
+    { .thread_name = NULL, .enabled = 0, .start_routine = NULL, .update_every = EBPF_DEFAULT_UPDATE_EVERY,
       .global_charts = 0, .apps_charts = CONFIG_BOOLEAN_NO, .cgroup_charts = CONFIG_BOOLEAN_NO,
       .mode = MODE_ENTRY, .optional = 0, .apps_routine = NULL, .maps = NULL, .pid_map_size = 0, .names = NULL,
-      .cfg = NULL, .config_name = NULL},
+      .cfg = NULL, .config_name = NULL, .kernels = 0, .load = EBPF_LOAD_LEGACY, .targets = NULL},
 };
 
 // Link with apps.plugin
@@ -181,6 +176,10 @@ pthread_mutex_t mutex_cgroup_shm;
 //Network viewer
 ebpf_network_viewer_options_t network_viewer_opt;
 
+// Statistic
+ebpf_plugin_stats_t plugin_statistics = {.core = 0, .legacy = 0, .running = 0, .threads = 0, .tracepoints = 0,
+                                         .probes = 0, .retprobes = 0, .trampolines = 0};
+
 /*****************************************************************
  *
  *  FUNCTIONS USED TO CLEAN MEMORY AND OPERATE SYSTEM FILES
@@ -764,6 +763,20 @@ static inline void ebpf_disable_cgroups()
 }
 
 /**
+ * Update Disabled Plugins
+ *
+ * This function calls ebpf_update_stats to update statistics for collector.
+ *
+ * @param em  a pointer to `struct ebpf_module`
+ */
+void ebpf_update_disabled_plugin_stats(ebpf_module_t *em)
+{
+    pthread_mutex_lock(&lock);
+    ebpf_update_stats(&plugin_statistics, em);
+    pthread_mutex_unlock(&lock);
+}
+
+/**
  * Print help on standard error for user knows how to use the collector.
  */
 void ebpf_print_help()
@@ -829,6 +842,10 @@ void ebpf_print_help()
             " [-]-swap              Enable chart related to swap run time.\n"
             "\n"
             " [-]-vfs               Enable chart related to vfs run time.\n"
+            "\n"
+            " [-]-legacy            Load legacy eBPF programs.\n"
+            "\n"
+            " [-]-core              Use CO-RE when available(Working in progress).\n"
             "\n",
             VERSION,
             (year >= 116) ? year + 1900 : 2020);
@@ -1339,7 +1356,6 @@ void set_global_variables()
     isrh = get_redhat_release();
     pid_max = get_system_pid_max();
     running_on_kernel = ebpf_get_kernel_version();
-    ebpf_update_kernel(kernel_string, 63, isrh, running_on_kernel);
 }
 
 /**
@@ -1356,6 +1372,19 @@ static inline void ebpf_load_thread_config()
 }
 
 /**
+ * Set Load mode
+ *
+ * @param load  default load mode.
+ */
+static inline void ebpf_set_load_mode(netdata_ebpf_load_mode_t load)
+{
+    int i;
+    for (i = 0; ebpf_modules[i].thread_name; i++) {
+        ebpf_modules[i].load = load;
+    }
+}
+
+/**
  * Parse arguments given from user.
  *
  * @param argc the number of arguments
@@ -1391,6 +1420,8 @@ static void ebpf_parse_args(int argc, char **argv)
         {"help",           no_argument,    0,  0 },
         {"global",         no_argument,    0,  0 },
         {"return",         no_argument,    0,  0 },
+        {"legacy",         no_argument,    0,  0 },
+        {"core",           no_argument,    0,  0 },
         {0, 0, 0, 0}
     };
 
@@ -1567,6 +1598,20 @@ static void ebpf_parse_args(int argc, char **argv)
 #endif
                 break;
             }
+            case EBPF_OPTION_LEGACY: {
+                ebpf_set_load_mode(EBPF_LOAD_LEGACY);
+#ifdef NETDATA_INTERNAL_CHECKS
+                info("EBPF running with \"LEGACY\" code, because it was started with the option \"[-]-legacy\".");
+#endif
+                break;
+            }
+            case EBPF_OPTION_CORE: {
+                ebpf_set_load_mode(EBPF_LOAD_CORE);
+#ifdef NETDATA_INTERNAL_CHECKS
+                info("EBPF running with \"CO-RE\" code, because it was started with the option \"[-]-core\".");
+#endif
+                break;
+            }
             default: {
                 break;
             }
@@ -1579,8 +1624,6 @@ static void ebpf_parse_args(int argc, char **argv)
 
         if (disable_cgroups)
             ebpf_disable_cgroups();
-
-        ebpf_enable_all_charts(disable_apps, disable_cgroups);
     }
 
     if (select_threads) {