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1 // SPDX-License-Identifier: GPL-3.0-or-later
2
3 #ifndef NETDATA_EBPF_IPC_H
4 #define NETDATA_EBPF_IPC_H 1
5
6 #ifndef TASK_COMM_LEN
7 #define TASK_COMM_LEN 16
8 #endif
9
10 #include "libnetdata/libnetdata.h"
11 #include <fcntl.h>
12 #include <sys/stat.h>
13 #include <semaphore.h>
14
15 #ifdef __cplusplus
16 extern "C" {
17 #endif
18
19 #include <stdlib.h>
20 #include <stdio.h>
21 #include <stdint.h>
22
23 #include <bpf/bpf.h>
24 #include <bpf/libbpf.h>
25 #ifdef LIBBPF_DEPRECATED
26 #include <bpf/btf.h>
27 #include <linux/btf.h>
28 #endif
29
30 typedef struct ebpf_user_mem_stat {
31 uint32_t total;
32 uint32_t current;
33 } ebpf_user_mem_stat_t;
34
35 // ----------------------------------------------------------------------------
36 // Enumeration used to identify threads with eBPF PIDs
37 enum ebpf_pids_index {
38 NETDATA_EBPF_PIDS_PROCESS_IDX,
39 NETDATA_EBPF_PIDS_SOCKET_IDX,
40 NETDATA_EBPF_PIDS_CACHESTAT_IDX,
41 NETDATA_EBPF_PIDS_DCSTAT_IDX,
42 NETDATA_EBPF_PIDS_SWAP_IDX,
43 NETDATA_EBPF_PIDS_VFS_IDX,
44 NETDATA_EBPF_PIDS_FD_IDX,
45 NETDATA_EBPF_PIDS_SHM_IDX,
46
47 NETDATA_EBPF_PIDS_PROC_FILE,
48 NETDATA_EBPF_PIDS_END_IDX
49 };
50
51 // ----------------------------------------------------------------------------
52 // Structures used to read data from kernel ring
53 typedef struct ebpf_process_stat {
54 uint64_t ct;
55 uint32_t uid;
56 uint32_t gid;
57 char name[TASK_COMM_LEN];
58
59 uint32_t tgid;
60 uint32_t pid;
61
62 //Counter
63 uint32_t exit_call;
64 uint32_t release_call;
65 uint32_t create_process;
66 uint32_t create_thread;
67
68 //Counter
69 uint32_t task_err;
70 } ebpf_process_stat_t;
71
72 typedef struct ebpf_publish_process {
73 uint64_t ct;
74
75 //Counter
76 uint32_t exit_call;
77 uint32_t release_call;
78 uint32_t create_process;
79 uint32_t create_thread;
80
81 //Counter
82 uint32_t task_err;
83 } ebpf_publish_process_t;
84
85 typedef struct ebpf_socket_publish_apps {
86 // Data read
87 uint64_t bytes_sent; // Bytes sent
88 uint64_t bytes_received; // Bytes received
89 uint64_t call_tcp_sent; // Number of times tcp_sendmsg was called
90 uint64_t call_tcp_received; // Number of times tcp_cleanup_rbuf was called
91 uint64_t retransmit; // Number of times tcp_retransmit was called
92 uint64_t call_udp_sent; // Number of times udp_sendmsg was called
93 uint64_t call_udp_received; // Number of times udp_recvmsg was called
94 uint64_t call_close; // Number of times tcp_close was called
95 uint64_t call_tcp_v4_connection; // Number of times tcp_v4_connect was called
96 uint64_t call_tcp_v6_connection; // Number of times tcp_v6_connect was called
97 } ebpf_socket_publish_apps_t;
98
99 typedef struct netdata_socket {
100 char name[TASK_COMM_LEN];
101
102 // Timestamp
103 uint64_t first_timestamp;
104 uint64_t current_timestamp;
105 // Socket additional info
106 uint16_t protocol;
107 uint16_t family;
108 uint32_t external_origin;
109 struct {
110 uint32_t call_tcp_sent;
111 uint32_t call_tcp_received;
112 uint64_t tcp_bytes_sent;
113 uint64_t tcp_bytes_received;
114 uint32_t close; //It is never used with UDP
115 uint32_t retransmit; //It is never used with UDP
116 uint32_t ipv4_connect;
117 uint32_t ipv6_connect;
118 uint32_t state; // We do not have charts for it, because we are using network viewer plugin
119 } tcp;
120
121 struct {
122 uint32_t call_udp_sent;
123 uint32_t call_udp_received;
124 uint64_t udp_bytes_sent;
125 uint64_t udp_bytes_received;
126 } udp;
127 } netdata_socket_t;
128
129 typedef struct netdata_cachestat_pid {
130 uint64_t ct;
131 uint32_t tgid;
132 uint32_t uid;
133 uint32_t gid;
134 char name[TASK_COMM_LEN];
135
136 uint32_t add_to_page_cache_lru;
137 uint32_t mark_page_accessed;
138 uint32_t account_page_dirtied;
139 uint32_t mark_buffer_dirty;
140 } netdata_cachestat_pid_t;
141
142 typedef struct netdata_cachestat {
143 uint32_t add_to_page_cache_lru;
144 uint32_t mark_page_accessed;
145 uint32_t account_page_dirtied;
146 uint32_t mark_buffer_dirty;
147 } netdata_cachestat_t;
148
149 typedef struct netdata_publish_cachestat {
150 uint64_t ct;
151
152 long long ratio;
153 long long dirty;
154 long long hit;
155 long long miss;
156
157 netdata_cachestat_t current;
158 netdata_cachestat_t prev;
159 } netdata_publish_cachestat_t;
160
161 typedef struct netdata_publish_dcstat_pid {
162 uint64_t cache_access;
163 uint64_t file_system;
164 uint64_t not_found;
165 } netdata_publish_dcstat_pid_t;
166
167 typedef struct netdata_publish_dcstat {
168 uint64_t ct;
169
170 long long ratio;
171 long long cache_access;
172
173 netdata_publish_dcstat_pid_t curr;
174 netdata_publish_dcstat_pid_t prev;
175 } netdata_publish_dcstat_t;
176
177 typedef struct netdata_dcstat_pid {
178 uint64_t ct;
179 uint32_t tgid;
180 uint32_t uid;
181 uint32_t gid;
182 char name[TASK_COMM_LEN];
183
184 uint64_t cache_access;
185 uint64_t file_system;
186 uint64_t not_found;
187 } netdata_dcstat_pid_t;
188
189 typedef struct __attribute__((packed)) netdata_publish_swap {
190 uint64_t ct;
191
192 uint32_t read;
193 uint32_t write;
194 } netdata_publish_swap_t;
195
196 typedef struct netdata_ebpf_swap {
197 uint64_t ct;
198 uint32_t tgid;
199 uint32_t uid;
200 uint32_t gid;
201 char name[TASK_COMM_LEN];
202
203 uint32_t read;
204 uint32_t write;
205 } netdata_ebpf_swap_t;
206
207 typedef struct netdata_publish_vfs {
208 uint64_t ct;
209
210 //Counter
211 uint32_t write_call;
212 uint32_t writev_call;
213 uint32_t read_call;
214 uint32_t readv_call;
215 uint32_t unlink_call;
216 uint32_t fsync_call;
217 uint32_t open_call;
218 uint32_t create_call;
219
220 //Accumulator
221 uint64_t write_bytes;
222 uint64_t writev_bytes;
223 uint64_t readv_bytes;
224 uint64_t read_bytes;
225
226 //Counter
227 uint32_t write_err;
228 uint32_t writev_err;
229 uint32_t read_err;
230 uint32_t readv_err;
231 uint32_t unlink_err;
232 uint32_t fsync_err;
233 uint32_t open_err;
234 uint32_t create_err;
235 } netdata_publish_vfs_t;
236
237 typedef struct netdata_ebpf_vfs {
238 uint64_t ct;
239 uint32_t tgid;
240 uint32_t uid;
241 uint32_t gid;
242 char name[TASK_COMM_LEN];
243
244 //Counter
245 uint32_t write_call;
246 uint32_t writev_call;
247 uint32_t read_call;
248 uint32_t readv_call;
249 uint32_t unlink_call;
250 uint32_t fsync_call;
251 uint32_t open_call;
252 uint32_t create_call;
253
254 //Accumulator
255 uint64_t write_bytes;
256 uint64_t writev_bytes;
257 uint64_t readv_bytes;
258 uint64_t read_bytes;
259
260 //Counter
261 uint32_t write_err;
262 uint32_t writev_err;
263 uint32_t read_err;
264 uint32_t readv_err;
265 uint32_t unlink_err;
266 uint32_t fsync_err;
267 uint32_t open_err;
268 uint32_t create_err;
269 } netdata_ebpf_vfs_t;
270
271 typedef struct netdata_publish_fd_stat {
272 uint64_t ct;
273
274 uint32_t open_call; // Open syscalls (open and openat)
275 uint32_t close_call; // Close syscall (close)
276
277 // Errors
278 uint32_t open_err;
279 uint32_t close_err;
280 } netdata_publish_fd_stat_t;
281
282 typedef struct netdata_fd_stat {
283 uint64_t ct;
284 uint32_t tgid;
285 uint32_t uid;
286 uint32_t gid;
287 char name[TASK_COMM_LEN];
288
289 uint32_t open_call; // Open syscalls (open and openat)
290 uint32_t close_call; // Close syscall (close)
291
292 // Errors
293 uint32_t open_err;
294 uint32_t close_err;
295 } netdata_fd_stat_t;
296
297 typedef struct netdata_publish_shm {
298 uint64_t ct;
299
300 uint32_t get;
301 uint32_t at;
302 uint32_t dt;
303 uint32_t ctl;
304 } netdata_publish_shm_t;
305
306 typedef struct netdata_ebpf_shm {
307 uint64_t ct;
308 uint32_t tgid;
309 uint32_t uid;
310 uint32_t gid;
311 char name[TASK_COMM_LEN];
312
313 uint32_t get;
314 uint32_t at;
315 uint32_t dt;
316 uint32_t ctl;
317 } netdata_ebpf_shm_t;
318
319 typedef struct netdata_ebpf_pid_stats {
320 uint32_t threads;
321 uint32_t pid;
322
323 ebpf_publish_process_t process;
324 ebpf_socket_publish_apps_t socket;
325 netdata_publish_cachestat_t cachestat;
326 netdata_publish_dcstat_t directory_cache;
327 netdata_publish_swap_t swap;
328 netdata_publish_vfs_t vfs;
329 netdata_publish_fd_stat_t fd;
330 netdata_publish_shm_t shm;
331 } netdata_ebpf_pid_stats_t;
332
333 // ----------------------------------------------------------------------------
334 // Helpers used during integration
335
336 #define NETDATA_EBPF_INTEGRATION_NAME "netdata_shm_integration_ebpf"
337 #define NETDATA_EBPF_SHM_INTEGRATION_NAME "/netdata_sem_integration_ebpf"
338
339 int netdata_integration_initialize_shm(size_t pids);
340 void netdata_integration_cleanup_shm();
341 netdata_ebpf_pid_stats_t *netdata_ebpf_get_shm_pointer_unsafe(uint32_t pid, enum ebpf_pids_index idx);
342 netdata_ebpf_pid_stats_t *netdata_ebpf_lookup_shm_pointer_unsafe(uint32_t pid);
343 bool netdata_ebpf_reset_shm_pointer_unsafe(int fd, uint32_t pid, enum ebpf_pids_index idx);
344 void netdata_ebpf_sweep_shm_for_module_unsafe(enum ebpf_pids_index idx);
345 void netdata_integration_current_ipc_data(ebpf_user_mem_stat_t *values);
346
347 extern sem_t *shm_mutex_ebpf_integration;
348 extern netdata_ebpf_pid_stats_t *integration_shm;
349
350 #ifdef __cplusplus
351 }
352 #endif
353
354 #endif //NETDATA_EBPF_IPC_H