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Commit | Line | Data |
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aba5acdf SH |
1 | /* |
2 | * ifstat.c handy utility to read net interface statistics | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or | |
5 | * modify it under the terms of the GNU General Public License | |
6 | * as published by the Free Software Foundation; either version | |
7 | * 2 of the License, or (at your option) any later version. | |
8 | * | |
9 | * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru> | |
10 | */ | |
11 | ||
12 | #include <stdio.h> | |
13 | #include <stdlib.h> | |
14 | #include <unistd.h> | |
15 | #include <fcntl.h> | |
16 | #include <string.h> | |
17 | #include <errno.h> | |
18 | #include <time.h> | |
19 | #include <sys/time.h> | |
20 | #include <fnmatch.h> | |
21 | #include <sys/file.h> | |
22 | #include <sys/socket.h> | |
23 | #include <sys/un.h> | |
24 | #include <sys/poll.h> | |
25 | #include <sys/wait.h> | |
26 | #include <sys/stat.h> | |
27 | #include <signal.h> | |
28 | #include <math.h> | |
9f3ea250 | 29 | #include <getopt.h> |
aba5acdf | 30 | |
daf7bd5c SH |
31 | #include <linux/if.h> |
32 | #include <linux/if_link.h> | |
aba5acdf | 33 | |
3d8048dc NF |
34 | #include "libnetlink.h" |
35 | #include "json_writer.h" | |
fbef6555 | 36 | #include "version.h" |
5a52102b | 37 | #include "utils.h" |
aba5acdf | 38 | |
acd1e437 SH |
39 | int dump_zeros; |
40 | int reset_history; | |
41 | int ignore_history; | |
42 | int no_output; | |
43 | int json_output; | |
44 | int no_update; | |
45 | int scan_interval; | |
46 | int time_constant; | |
47 | int show_errors; | |
aba5acdf SH |
48 | double W; |
49 | char **patterns; | |
50 | int npatterns; | |
5a52102b NF |
51 | bool is_extended; |
52 | int filter_type; | |
53 | int sub_type; | |
aba5acdf SH |
54 | |
55 | char info_source[128]; | |
56 | int source_mismatch; | |
57 | ||
a571587d | 58 | #define MAXS (sizeof(struct rtnl_link_stats)/sizeof(__u32)) |
5a52102b | 59 | #define NO_SUB_TYPE 0xffff |
aba5acdf | 60 | |
acd1e437 | 61 | struct ifstat_ent { |
aba5acdf SH |
62 | struct ifstat_ent *next; |
63 | char *name; | |
64 | int ifindex; | |
5a52102b | 65 | __u64 val[MAXS]; |
aba5acdf | 66 | double rate[MAXS]; |
a571587d | 67 | __u32 ival[MAXS]; |
aba5acdf SH |
68 | }; |
69 | ||
ec3e625c SH |
70 | static const char *stats[MAXS] = { |
71 | "rx_packets", | |
72 | "tx_packets", | |
73 | "rx_bytes", | |
74 | "tx_bytes", | |
75 | "rx_errors", | |
76 | "tx_errors", | |
77 | "rx_dropped", | |
78 | "tx_dropped", | |
79 | "multicast", | |
80 | "collisions", | |
81 | "rx_length_errors", | |
82 | "rx_over_errors", | |
83 | "rx_crc_errors", | |
84 | "rx_frame_errors", | |
85 | "rx_fifo_errors", | |
86 | "rx_missed_errors", | |
87 | "tx_aborted_errors", | |
88 | "tx_carrier_errors", | |
89 | "tx_fifo_errors", | |
90 | "tx_heartbeat_errors", | |
91 | "tx_window_errors", | |
92 | "rx_compressed", | |
93 | "tx_compressed" | |
94 | }; | |
95 | ||
aba5acdf SH |
96 | struct ifstat_ent *kern_db; |
97 | struct ifstat_ent *hist_db; | |
98 | ||
50772dc5 | 99 | static int match(const char *id) |
aba5acdf SH |
100 | { |
101 | int i; | |
102 | ||
103 | if (npatterns == 0) | |
104 | return 1; | |
105 | ||
acd1e437 | 106 | for (i = 0; i < npatterns; i++) { |
8f5a602f | 107 | if (!fnmatch(patterns[i], id, FNM_CASEFOLD)) |
aba5acdf SH |
108 | return 1; |
109 | } | |
110 | return 0; | |
111 | } | |
112 | ||
cd554f2c | 113 | static int get_nlmsg_extended(struct nlmsghdr *m, void *arg) |
5a52102b NF |
114 | { |
115 | struct if_stats_msg *ifsm = NLMSG_DATA(m); | |
116 | struct rtattr *tb[IFLA_STATS_MAX+1]; | |
117 | int len = m->nlmsg_len; | |
118 | struct ifstat_ent *n; | |
119 | ||
120 | if (m->nlmsg_type != RTM_NEWSTATS) | |
121 | return 0; | |
122 | ||
123 | len -= NLMSG_LENGTH(sizeof(*ifsm)); | |
124 | if (len < 0) | |
125 | return -1; | |
126 | ||
127 | parse_rtattr(tb, IFLA_STATS_MAX, IFLA_STATS_RTA(ifsm), len); | |
128 | if (tb[filter_type] == NULL) | |
129 | return 0; | |
130 | ||
131 | n = malloc(sizeof(*n)); | |
132 | if (!n) | |
133 | abort(); | |
134 | ||
135 | n->ifindex = ifsm->ifindex; | |
136 | n->name = strdup(ll_index_to_name(ifsm->ifindex)); | |
137 | ||
138 | if (sub_type == NO_SUB_TYPE) { | |
139 | memcpy(&n->val, RTA_DATA(tb[filter_type]), sizeof(n->val)); | |
140 | } else { | |
141 | struct rtattr *attr; | |
142 | ||
143 | attr = parse_rtattr_one_nested(sub_type, tb[filter_type]); | |
35f6adef PS |
144 | if (attr == NULL) { |
145 | free(n); | |
5a52102b | 146 | return 0; |
35f6adef | 147 | } |
5a52102b NF |
148 | memcpy(&n->val, RTA_DATA(attr), sizeof(n->val)); |
149 | } | |
150 | memset(&n->rate, 0, sizeof(n->rate)); | |
151 | n->next = kern_db; | |
152 | kern_db = n; | |
153 | return 0; | |
154 | } | |
155 | ||
cd554f2c | 156 | static int get_nlmsg(struct nlmsghdr *m, void *arg) |
aba5acdf SH |
157 | { |
158 | struct ifinfomsg *ifi = NLMSG_DATA(m); | |
acd1e437 | 159 | struct rtattr *tb[IFLA_MAX+1]; |
aba5acdf SH |
160 | int len = m->nlmsg_len; |
161 | struct ifstat_ent *n; | |
162 | int i; | |
163 | ||
164 | if (m->nlmsg_type != RTM_NEWLINK) | |
165 | return 0; | |
166 | ||
167 | len -= NLMSG_LENGTH(sizeof(*ifi)); | |
168 | if (len < 0) | |
169 | return -1; | |
170 | ||
171 | if (!(ifi->ifi_flags&IFF_UP)) | |
172 | return 0; | |
173 | ||
aba5acdf SH |
174 | parse_rtattr(tb, IFLA_MAX, IFLA_RTA(ifi), len); |
175 | if (tb[IFLA_IFNAME] == NULL || tb[IFLA_STATS] == NULL) | |
176 | return 0; | |
177 | ||
178 | n = malloc(sizeof(*n)); | |
179 | if (!n) | |
180 | abort(); | |
181 | n->ifindex = ifi->ifi_index; | |
182 | n->name = strdup(RTA_DATA(tb[IFLA_IFNAME])); | |
183 | memcpy(&n->ival, RTA_DATA(tb[IFLA_STATS]), sizeof(n->ival)); | |
184 | memset(&n->rate, 0, sizeof(n->rate)); | |
acd1e437 | 185 | for (i = 0; i < MAXS; i++) |
aba5acdf SH |
186 | n->val[i] = n->ival[i]; |
187 | n->next = kern_db; | |
188 | kern_db = n; | |
189 | return 0; | |
190 | } | |
191 | ||
d1f28cf1 | 192 | static void load_info(void) |
aba5acdf SH |
193 | { |
194 | struct ifstat_ent *db, *n; | |
195 | struct rtnl_handle rth; | |
5a52102b | 196 | __u32 filter_mask; |
aba5acdf SH |
197 | |
198 | if (rtnl_open(&rth, 0) < 0) | |
199 | exit(1); | |
200 | ||
5a52102b NF |
201 | if (is_extended) { |
202 | ll_init_map(&rth); | |
203 | filter_mask = IFLA_STATS_FILTER_BIT(filter_type); | |
56eeeda9 DA |
204 | if (rtnl_statsdump_req_filter(&rth, AF_UNSPEC, |
205 | filter_mask) < 0) { | |
5a52102b NF |
206 | perror("Cannot send dump request"); |
207 | exit(1); | |
208 | } | |
aba5acdf | 209 | |
5a52102b NF |
210 | if (rtnl_dump_filter(&rth, get_nlmsg_extended, NULL) < 0) { |
211 | fprintf(stderr, "Dump terminated\n"); | |
212 | exit(1); | |
213 | } | |
214 | } else { | |
31ae2912 | 215 | if (rtnl_linkdump_req(&rth, AF_INET) < 0) { |
5a52102b NF |
216 | perror("Cannot send dump request"); |
217 | exit(1); | |
218 | } | |
219 | ||
220 | if (rtnl_dump_filter(&rth, get_nlmsg, NULL) < 0) { | |
221 | fprintf(stderr, "Dump terminated\n"); | |
222 | exit(1); | |
223 | } | |
aba5acdf SH |
224 | } |
225 | ||
226 | rtnl_close(&rth); | |
227 | ||
228 | db = kern_db; | |
229 | kern_db = NULL; | |
230 | ||
231 | while (db) { | |
232 | n = db; | |
233 | db = db->next; | |
234 | n->next = kern_db; | |
235 | kern_db = n; | |
236 | } | |
237 | } | |
238 | ||
d1f28cf1 | 239 | static void load_raw_table(FILE *fp) |
aba5acdf SH |
240 | { |
241 | char buf[4096]; | |
242 | struct ifstat_ent *db = NULL; | |
243 | struct ifstat_ent *n; | |
244 | ||
245 | while (fgets(buf, sizeof(buf), fp) != NULL) { | |
246 | char *p; | |
247 | char *next; | |
248 | int i; | |
249 | ||
250 | if (buf[0] == '#') { | |
251 | buf[strlen(buf)-1] = 0; | |
252 | if (info_source[0] && strcmp(info_source, buf+1)) | |
253 | source_mismatch = 1; | |
254 | strncpy(info_source, buf+1, sizeof(info_source)-1); | |
255 | continue; | |
256 | } | |
257 | if ((n = malloc(sizeof(*n))) == NULL) | |
258 | abort(); | |
259 | ||
260 | if (!(p = strchr(buf, ' '))) | |
261 | abort(); | |
262 | *p++ = 0; | |
263 | ||
264 | if (sscanf(buf, "%d", &n->ifindex) != 1) | |
265 | abort(); | |
266 | if (!(next = strchr(p, ' '))) | |
267 | abort(); | |
268 | *next++ = 0; | |
269 | ||
270 | n->name = strdup(p); | |
271 | p = next; | |
272 | ||
acd1e437 SH |
273 | for (i = 0; i < MAXS; i++) { |
274 | unsigned int rate; | |
275 | ||
aba5acdf SH |
276 | if (!(next = strchr(p, ' '))) |
277 | abort(); | |
278 | *next++ = 0; | |
279 | if (sscanf(p, "%llu", n->val+i) != 1) | |
280 | abort(); | |
a571587d | 281 | n->ival[i] = (__u32)n->val[i]; |
aba5acdf SH |
282 | p = next; |
283 | if (!(next = strchr(p, ' '))) | |
284 | abort(); | |
285 | *next++ = 0; | |
286 | if (sscanf(p, "%u", &rate) != 1) | |
287 | abort(); | |
288 | n->rate[i] = rate; | |
289 | p = next; | |
290 | } | |
291 | n->next = db; | |
292 | db = n; | |
293 | } | |
294 | ||
295 | while (db) { | |
296 | n = db; | |
297 | db = db->next; | |
298 | n->next = kern_db; | |
299 | kern_db = n; | |
300 | } | |
301 | } | |
302 | ||
d1f28cf1 | 303 | static void dump_raw_db(FILE *fp, int to_hist) |
aba5acdf | 304 | { |
fcc16c22 | 305 | json_writer_t *jw = json_output ? jsonw_new(fp) : NULL; |
aba5acdf | 306 | struct ifstat_ent *n, *h; |
ec3e625c | 307 | |
aba5acdf | 308 | h = hist_db; |
fcc16c22 | 309 | if (jw) { |
d721a145 | 310 | jsonw_start_object(jw); |
fcc16c22 SH |
311 | jsonw_pretty(jw, pretty); |
312 | jsonw_name(jw, info_source); | |
313 | jsonw_start_object(jw); | |
314 | } else | |
ec3e625c | 315 | fprintf(fp, "#%s\n", info_source); |
aba5acdf | 316 | |
acd1e437 | 317 | for (n = kern_db; n; n = n->next) { |
aba5acdf SH |
318 | int i; |
319 | unsigned long long *vals = n->val; | |
320 | double *rates = n->rate; | |
acd1e437 | 321 | |
aba5acdf SH |
322 | if (!match(n->name)) { |
323 | struct ifstat_ent *h1; | |
acd1e437 | 324 | |
aba5acdf SH |
325 | if (!to_hist) |
326 | continue; | |
327 | for (h1 = h; h1; h1 = h1->next) { | |
328 | if (h1->ifindex == n->ifindex) { | |
329 | vals = h1->val; | |
330 | rates = h1->rate; | |
331 | h = h1->next; | |
332 | break; | |
333 | } | |
334 | } | |
335 | } | |
ec3e625c | 336 | |
fcc16c22 SH |
337 | if (jw) { |
338 | jsonw_name(jw, n->name); | |
339 | jsonw_start_object(jw); | |
1473bda9 | 340 | |
acd1e437 | 341 | for (i = 0; i < MAXS && stats[i]; i++) |
fcc16c22 SH |
342 | jsonw_uint_field(jw, stats[i], vals[i]); |
343 | jsonw_end_object(jw); | |
ec3e625c SH |
344 | } else { |
345 | fprintf(fp, "%d %s ", n->ifindex, n->name); | |
acd1e437 | 346 | for (i = 0; i < MAXS; i++) |
3d0b7439 | 347 | fprintf(fp, "%llu %u ", vals[i], |
acd1e437 | 348 | (unsigned int)rates[i]); |
ec3e625c SH |
349 | fprintf(fp, "\n"); |
350 | } | |
aba5acdf | 351 | } |
fcc16c22 | 352 | if (jw) { |
d721a145 AK |
353 | jsonw_end_object(jw); |
354 | ||
fcc16c22 SH |
355 | jsonw_end_object(jw); |
356 | jsonw_destroy(&jw); | |
357 | } | |
aba5acdf SH |
358 | } |
359 | ||
9f3ea250 SH |
360 | /* use communication definitions of meg/kilo etc */ |
361 | static const unsigned long long giga = 1000000000ull; | |
bb6a21a4 SH |
362 | static const unsigned long long mega = 1000000; |
363 | static const unsigned long long kilo = 1000; | |
aba5acdf | 364 | |
ec3e625c SH |
365 | static void format_rate(FILE *fp, const unsigned long long *vals, |
366 | const double *rates, int i) | |
aba5acdf SH |
367 | { |
368 | char temp[64]; | |
ec3e625c | 369 | |
9f3ea250 SH |
370 | if (vals[i] > giga) |
371 | fprintf(fp, "%7lluM ", vals[i]/mega); | |
372 | else if (vals[i] > mega) | |
373 | fprintf(fp, "%7lluK ", vals[i]/kilo); | |
aba5acdf SH |
374 | else |
375 | fprintf(fp, "%8llu ", vals[i]); | |
376 | ||
9f3ea250 | 377 | if (rates[i] > mega) { |
acd1e437 | 378 | sprintf(temp, "%uM", (unsigned int)(rates[i]/mega)); |
aba5acdf | 379 | fprintf(fp, "%-6s ", temp); |
9f3ea250 | 380 | } else if (rates[i] > kilo) { |
acd1e437 | 381 | sprintf(temp, "%uK", (unsigned int)(rates[i]/kilo)); |
aba5acdf SH |
382 | fprintf(fp, "%-6s ", temp); |
383 | } else | |
acd1e437 | 384 | fprintf(fp, "%-6u ", (unsigned int)rates[i]); |
aba5acdf SH |
385 | } |
386 | ||
ec3e625c | 387 | static void format_pair(FILE *fp, const unsigned long long *vals, int i, int k) |
aba5acdf SH |
388 | { |
389 | char temp[64]; | |
acd1e437 | 390 | |
9f3ea250 SH |
391 | if (vals[i] > giga) |
392 | fprintf(fp, "%7lluM ", vals[i]/mega); | |
393 | else if (vals[i] > mega) | |
394 | fprintf(fp, "%7lluK ", vals[i]/kilo); | |
aba5acdf SH |
395 | else |
396 | fprintf(fp, "%8llu ", vals[i]); | |
397 | ||
9f3ea250 | 398 | if (vals[k] > giga) { |
acd1e437 | 399 | sprintf(temp, "%uM", (unsigned int)(vals[k]/mega)); |
aba5acdf | 400 | fprintf(fp, "%-6s ", temp); |
9f3ea250 | 401 | } else if (vals[k] > mega) { |
acd1e437 | 402 | sprintf(temp, "%uK", (unsigned int)(vals[k]/kilo)); |
aba5acdf SH |
403 | fprintf(fp, "%-6s ", temp); |
404 | } else | |
acd1e437 | 405 | fprintf(fp, "%-6u ", (unsigned int)vals[k]); |
aba5acdf SH |
406 | } |
407 | ||
d1f28cf1 | 408 | static void print_head(FILE *fp) |
aba5acdf SH |
409 | { |
410 | fprintf(fp, "#%s\n", info_source); | |
411 | fprintf(fp, "%-15s ", "Interface"); | |
412 | ||
413 | fprintf(fp, "%8s/%-6s ", "RX Pkts", "Rate"); | |
414 | fprintf(fp, "%8s/%-6s ", "TX Pkts", "Rate"); | |
415 | fprintf(fp, "%8s/%-6s ", "RX Data", "Rate"); | |
acd1e437 | 416 | fprintf(fp, "%8s/%-6s\n", "TX Data", "Rate"); |
aba5acdf SH |
417 | |
418 | if (!show_errors) { | |
419 | fprintf(fp, "%-15s ", ""); | |
420 | fprintf(fp, "%8s/%-6s ", "RX Errs", "Drop"); | |
421 | fprintf(fp, "%8s/%-6s ", "TX Errs", "Drop"); | |
422 | fprintf(fp, "%8s/%-6s ", "RX Over", "Rate"); | |
acd1e437 | 423 | fprintf(fp, "%8s/%-6s\n", "TX Coll", "Rate"); |
aba5acdf SH |
424 | } else { |
425 | fprintf(fp, "%-15s ", ""); | |
426 | fprintf(fp, "%8s/%-6s ", "RX Errs", "Rate"); | |
427 | fprintf(fp, "%8s/%-6s ", "RX Drop", "Rate"); | |
428 | fprintf(fp, "%8s/%-6s ", "RX Over", "Rate"); | |
acd1e437 | 429 | fprintf(fp, "%8s/%-6s\n", "RX Leng", "Rate"); |
aba5acdf SH |
430 | |
431 | fprintf(fp, "%-15s ", ""); | |
432 | fprintf(fp, "%8s/%-6s ", "RX Crc", "Rate"); | |
433 | fprintf(fp, "%8s/%-6s ", "RX Frm", "Rate"); | |
434 | fprintf(fp, "%8s/%-6s ", "RX Fifo", "Rate"); | |
acd1e437 | 435 | fprintf(fp, "%8s/%-6s\n", "RX Miss", "Rate"); |
aba5acdf SH |
436 | |
437 | fprintf(fp, "%-15s ", ""); | |
438 | fprintf(fp, "%8s/%-6s ", "TX Errs", "Rate"); | |
439 | fprintf(fp, "%8s/%-6s ", "TX Drop", "Rate"); | |
440 | fprintf(fp, "%8s/%-6s ", "TX Coll", "Rate"); | |
acd1e437 | 441 | fprintf(fp, "%8s/%-6s\n", "TX Carr", "Rate"); |
aba5acdf SH |
442 | |
443 | fprintf(fp, "%-15s ", ""); | |
444 | fprintf(fp, "%8s/%-6s ", "TX Abrt", "Rate"); | |
445 | fprintf(fp, "%8s/%-6s ", "TX Fifo", "Rate"); | |
446 | fprintf(fp, "%8s/%-6s ", "TX Hear", "Rate"); | |
acd1e437 | 447 | fprintf(fp, "%8s/%-6s\n", "TX Wind", "Rate"); |
aba5acdf SH |
448 | } |
449 | } | |
450 | ||
fcc16c22 | 451 | static void print_one_json(json_writer_t *jw, const struct ifstat_ent *n, |
ec3e625c SH |
452 | const unsigned long long *vals) |
453 | { | |
fcc16c22 SH |
454 | int i, m = show_errors ? 20 : 10; |
455 | ||
456 | jsonw_name(jw, n->name); | |
457 | jsonw_start_object(jw); | |
458 | ||
acd1e437 | 459 | for (i = 0; i < m && stats[i]; i++) |
fcc16c22 SH |
460 | jsonw_uint_field(jw, stats[i], vals[i]); |
461 | ||
462 | jsonw_end_object(jw); | |
ec3e625c SH |
463 | } |
464 | ||
465 | static void print_one_if(FILE *fp, const struct ifstat_ent *n, | |
466 | const unsigned long long *vals) | |
aba5acdf SH |
467 | { |
468 | int i; | |
ec3e625c | 469 | |
aba5acdf | 470 | fprintf(fp, "%-15s ", n->name); |
acd1e437 | 471 | for (i = 0; i < 4; i++) |
aba5acdf SH |
472 | format_rate(fp, vals, n->rate, i); |
473 | fprintf(fp, "\n"); | |
474 | ||
475 | if (!show_errors) { | |
476 | fprintf(fp, "%-15s ", ""); | |
477 | format_pair(fp, vals, 4, 6); | |
478 | format_pair(fp, vals, 5, 7); | |
479 | format_rate(fp, vals, n->rate, 11); | |
480 | format_rate(fp, vals, n->rate, 9); | |
481 | fprintf(fp, "\n"); | |
482 | } else { | |
483 | fprintf(fp, "%-15s ", ""); | |
484 | format_rate(fp, vals, n->rate, 4); | |
485 | format_rate(fp, vals, n->rate, 6); | |
486 | format_rate(fp, vals, n->rate, 11); | |
487 | format_rate(fp, vals, n->rate, 10); | |
488 | fprintf(fp, "\n"); | |
489 | ||
490 | fprintf(fp, "%-15s ", ""); | |
491 | format_rate(fp, vals, n->rate, 12); | |
492 | format_rate(fp, vals, n->rate, 13); | |
493 | format_rate(fp, vals, n->rate, 14); | |
494 | format_rate(fp, vals, n->rate, 15); | |
495 | fprintf(fp, "\n"); | |
496 | ||
497 | fprintf(fp, "%-15s ", ""); | |
498 | format_rate(fp, vals, n->rate, 5); | |
499 | format_rate(fp, vals, n->rate, 7); | |
500 | format_rate(fp, vals, n->rate, 9); | |
501 | format_rate(fp, vals, n->rate, 17); | |
502 | fprintf(fp, "\n"); | |
503 | ||
504 | fprintf(fp, "%-15s ", ""); | |
505 | format_rate(fp, vals, n->rate, 16); | |
506 | format_rate(fp, vals, n->rate, 18); | |
507 | format_rate(fp, vals, n->rate, 19); | |
508 | format_rate(fp, vals, n->rate, 20); | |
509 | fprintf(fp, "\n"); | |
510 | } | |
511 | } | |
512 | ||
d1f28cf1 | 513 | static void dump_kern_db(FILE *fp) |
aba5acdf | 514 | { |
fcc16c22 | 515 | json_writer_t *jw = json_output ? jsonw_new(fp) : NULL; |
dc484542 | 516 | struct ifstat_ent *n; |
aba5acdf | 517 | |
fcc16c22 | 518 | if (jw) { |
d721a145 | 519 | jsonw_start_object(jw); |
fcc16c22 SH |
520 | jsonw_pretty(jw, pretty); |
521 | jsonw_name(jw, info_source); | |
522 | jsonw_start_object(jw); | |
523 | } else | |
ec3e625c | 524 | print_head(fp); |
aba5acdf | 525 | |
acd1e437 | 526 | for (n = kern_db; n; n = n->next) { |
aba5acdf SH |
527 | if (!match(n->name)) |
528 | continue; | |
ec3e625c | 529 | |
fcc16c22 SH |
530 | if (jw) |
531 | print_one_json(jw, n, n->val); | |
532 | else | |
ec3e625c | 533 | print_one_if(fp, n, n->val); |
aba5acdf | 534 | } |
b530cef0 PS |
535 | if (jw) { |
536 | jsonw_end_object(jw); | |
537 | ||
538 | jsonw_end_object(jw); | |
539 | jsonw_destroy(&jw); | |
540 | } | |
aba5acdf SH |
541 | } |
542 | ||
d1f28cf1 | 543 | static void dump_incr_db(FILE *fp) |
aba5acdf SH |
544 | { |
545 | struct ifstat_ent *n, *h; | |
fcc16c22 | 546 | json_writer_t *jw = json_output ? jsonw_new(fp) : NULL; |
aba5acdf | 547 | |
ec3e625c | 548 | h = hist_db; |
fcc16c22 | 549 | if (jw) { |
d721a145 | 550 | jsonw_start_object(jw); |
fcc16c22 SH |
551 | jsonw_pretty(jw, pretty); |
552 | jsonw_name(jw, info_source); | |
553 | jsonw_start_object(jw); | |
554 | } else | |
ec3e625c | 555 | print_head(fp); |
aba5acdf | 556 | |
acd1e437 | 557 | for (n = kern_db; n; n = n->next) { |
aba5acdf SH |
558 | int i; |
559 | unsigned long long vals[MAXS]; | |
560 | struct ifstat_ent *h1; | |
561 | ||
562 | memcpy(vals, n->val, sizeof(vals)); | |
563 | ||
564 | for (h1 = h; h1; h1 = h1->next) { | |
565 | if (h1->ifindex == n->ifindex) { | |
566 | for (i = 0; i < MAXS; i++) | |
567 | vals[i] -= h1->val[i]; | |
568 | h = h1->next; | |
569 | break; | |
570 | } | |
571 | } | |
572 | if (!match(n->name)) | |
573 | continue; | |
ec3e625c | 574 | |
fcc16c22 SH |
575 | if (jw) |
576 | print_one_json(jw, n, n->val); | |
577 | else | |
ec3e625c | 578 | print_one_if(fp, n, vals); |
aba5acdf | 579 | } |
aba5acdf | 580 | |
fcc16c22 | 581 | if (jw) { |
d721a145 AK |
582 | jsonw_end_object(jw); |
583 | ||
fcc16c22 SH |
584 | jsonw_end_object(jw); |
585 | jsonw_destroy(&jw); | |
586 | } | |
587 | } | |
aba5acdf SH |
588 | |
589 | static int children; | |
590 | ||
d1f28cf1 | 591 | static void sigchild(int signo) |
aba5acdf SH |
592 | { |
593 | } | |
594 | ||
d1f28cf1 | 595 | static void update_db(int interval) |
aba5acdf SH |
596 | { |
597 | struct ifstat_ent *n, *h; | |
598 | ||
599 | n = kern_db; | |
600 | kern_db = NULL; | |
601 | ||
602 | load_info(); | |
603 | ||
604 | h = kern_db; | |
605 | kern_db = n; | |
606 | ||
607 | for (n = kern_db; n; n = n->next) { | |
608 | struct ifstat_ent *h1; | |
acd1e437 | 609 | |
aba5acdf SH |
610 | for (h1 = h; h1; h1 = h1->next) { |
611 | if (h1->ifindex == n->ifindex) { | |
612 | int i; | |
acd1e437 | 613 | |
aba5acdf SH |
614 | for (i = 0; i < MAXS; i++) { |
615 | if ((long)(h1->ival[i] - n->ival[i]) < 0) { | |
ae665a52 | 616 | memset(n->ival, 0, sizeof(n->ival)); |
aba5acdf SH |
617 | break; |
618 | } | |
619 | } | |
ae665a52 | 620 | for (i = 0; i < MAXS; i++) { |
aba5acdf | 621 | double sample; |
5a52102b NF |
622 | __u64 incr; |
623 | ||
624 | if (is_extended) { | |
625 | incr = h1->val[i] - n->val[i]; | |
626 | n->val[i] = h1->val[i]; | |
627 | } else { | |
628 | incr = (__u32) (h1->ival[i] - n->ival[i]); | |
629 | n->val[i] += incr; | |
630 | n->ival[i] = h1->ival[i]; | |
631 | } | |
acd1e437 | 632 | |
aba5acdf SH |
633 | sample = (double)(incr*1000)/interval; |
634 | if (interval >= scan_interval) { | |
635 | n->rate[i] += W*(sample-n->rate[i]); | |
636 | } else if (interval >= 1000) { | |
637 | if (interval >= time_constant) { | |
638 | n->rate[i] = sample; | |
639 | } else { | |
640 | double w = W*(double)interval/scan_interval; | |
acd1e437 | 641 | |
aba5acdf SH |
642 | n->rate[i] += w*(sample-n->rate[i]); |
643 | } | |
644 | } | |
645 | } | |
646 | ||
647 | while (h != h1) { | |
648 | struct ifstat_ent *tmp = h; | |
acd1e437 | 649 | |
aba5acdf SH |
650 | h = h->next; |
651 | free(tmp->name); | |
652 | free(tmp); | |
653 | }; | |
654 | h = h1->next; | |
655 | free(h1->name); | |
656 | free(h1); | |
657 | break; | |
658 | } | |
659 | } | |
660 | } | |
661 | } | |
662 | ||
acd1e437 | 663 | #define T_DIFF(a, b) (((a).tv_sec-(b).tv_sec)*1000 + ((a).tv_usec-(b).tv_usec)/1000) |
aba5acdf SH |
664 | |
665 | ||
d1f28cf1 | 666 | static void server_loop(int fd) |
aba5acdf | 667 | { |
737f15f6 | 668 | struct timeval snaptime = { 0 }; |
aba5acdf | 669 | struct pollfd p; |
acd1e437 | 670 | |
aba5acdf SH |
671 | p.fd = fd; |
672 | p.events = p.revents = POLLIN; | |
673 | ||
674 | sprintf(info_source, "%d.%lu sampling_interval=%d time_const=%d", | |
675 | getpid(), (unsigned long)random(), scan_interval/1000, time_constant/1000); | |
676 | ||
677 | load_info(); | |
678 | ||
679 | for (;;) { | |
680 | int status; | |
dd81ee04 | 681 | time_t tdiff; |
aba5acdf | 682 | struct timeval now; |
737f15f6 | 683 | |
aba5acdf SH |
684 | gettimeofday(&now, NULL); |
685 | tdiff = T_DIFF(now, snaptime); | |
686 | if (tdiff >= scan_interval) { | |
687 | update_db(tdiff); | |
688 | snaptime = now; | |
689 | tdiff = 0; | |
690 | } | |
737f15f6 | 691 | |
dd81ee04 | 692 | if (poll(&p, 1, scan_interval - tdiff) > 0 |
aba5acdf SH |
693 | && (p.revents&POLLIN)) { |
694 | int clnt = accept(fd, NULL, NULL); | |
acd1e437 | 695 | |
aba5acdf SH |
696 | if (clnt >= 0) { |
697 | pid_t pid; | |
acd1e437 | 698 | |
aba5acdf SH |
699 | if (children >= 5) { |
700 | close(clnt); | |
701 | } else if ((pid = fork()) != 0) { | |
acd1e437 | 702 | if (pid > 0) |
aba5acdf SH |
703 | children++; |
704 | close(clnt); | |
705 | } else { | |
706 | FILE *fp = fdopen(clnt, "w"); | |
acd1e437 | 707 | |
dd81ee04 | 708 | if (fp) |
aba5acdf | 709 | dump_raw_db(fp, 0); |
aba5acdf SH |
710 | exit(0); |
711 | } | |
712 | } | |
713 | } | |
714 | while (children && waitpid(-1, &status, WNOHANG) > 0) | |
715 | children--; | |
716 | } | |
717 | } | |
718 | ||
d1f28cf1 | 719 | static int verify_forging(int fd) |
aba5acdf SH |
720 | { |
721 | struct ucred cred; | |
737f15f6 SH |
722 | socklen_t olen = sizeof(cred); |
723 | ||
acd1e437 | 724 | if (getsockopt(fd, SOL_SOCKET, SO_PEERCRED, (void *)&cred, &olen) || |
aba5acdf SH |
725 | olen < sizeof(cred)) |
726 | return -1; | |
727 | if (cred.uid == getuid() || cred.uid == 0) | |
728 | return 0; | |
729 | return -1; | |
730 | } | |
731 | ||
5a52102b NF |
732 | static void xstat_usage(void) |
733 | { | |
734 | fprintf(stderr, | |
1c2df613 NF |
735 | "Usage: ifstat supported xstats:\n" |
736 | " cpu_hits Counts only packets that went via the CPU.\n"); | |
5a52102b NF |
737 | } |
738 | ||
739 | struct extended_stats_options_t { | |
740 | char *name; | |
741 | int id; | |
742 | int sub_type; | |
743 | }; | |
744 | ||
745 | /* Note: if one xstat name is subset of another, it should be before it in this | |
746 | * list. | |
747 | * Name length must be under 64 chars. | |
748 | */ | |
749 | static const struct extended_stats_options_t extended_stats_options[] = { | |
1c2df613 | 750 | {"cpu_hits", IFLA_STATS_LINK_OFFLOAD_XSTATS, IFLA_OFFLOAD_XSTATS_CPU_HIT}, |
5a52102b NF |
751 | }; |
752 | ||
753 | static const char *get_filter_type(const char *name) | |
754 | { | |
755 | int name_len; | |
756 | int i; | |
757 | ||
758 | name_len = strlen(name); | |
759 | for (i = 0; i < ARRAY_SIZE(extended_stats_options); i++) { | |
760 | const struct extended_stats_options_t *xstat; | |
761 | ||
762 | xstat = &extended_stats_options[i]; | |
763 | if (strncmp(name, xstat->name, name_len) == 0) { | |
764 | filter_type = xstat->id; | |
765 | sub_type = xstat->sub_type; | |
766 | return xstat->name; | |
767 | } | |
768 | } | |
769 | ||
770 | fprintf(stderr, "invalid ifstat extension %s\n", name); | |
771 | xstat_usage(); | |
772 | return NULL; | |
773 | } | |
774 | ||
d7e0809e SH |
775 | static void usage(void) __attribute__((noreturn)); |
776 | ||
aba5acdf SH |
777 | static void usage(void) |
778 | { | |
d7e0809e SH |
779 | fprintf(stderr, |
780 | "Usage: ifstat [OPTION] [ PATTERN [ PATTERN ] ]\n" | |
eca7a742 MF |
781 | " -h, --help this message\n" |
782 | " -a, --ignore ignore history\n" | |
783 | " -d, --scan=SECS sample every statistics every SECS\n" | |
784 | " -e, --errors show errors\n" | |
785 | " -j, --json format output in JSON\n" | |
786 | " -n, --nooutput do history only\n" | |
787 | " -p, --pretty pretty print\n" | |
788 | " -r, --reset reset history\n" | |
789 | " -s, --noupdate don't update history\n" | |
790 | " -t, --interval=SECS report average over the last SECS\n" | |
791 | " -V, --version output version information\n" | |
5a52102b NF |
792 | " -z, --zeros show entries with zero activity\n" |
793 | " -x, --extended=TYPE show extended stats of TYPE\n"); | |
d7e0809e SH |
794 | |
795 | exit(-1); | |
aba5acdf SH |
796 | } |
797 | ||
9f3ea250 SH |
798 | static const struct option longopts[] = { |
799 | { "help", 0, 0, 'h' }, | |
800 | { "ignore", 0, 0, 'a' }, | |
801 | { "scan", 1, 0, 'd'}, | |
802 | { "errors", 0, 0, 'e' }, | |
803 | { "nooutput", 0, 0, 'n' }, | |
ec3e625c | 804 | { "json", 0, 0, 'j' }, |
9f3ea250 | 805 | { "reset", 0, 0, 'r' }, |
fcc16c22 | 806 | { "pretty", 0, 0, 'p' }, |
9f3ea250 SH |
807 | { "noupdate", 0, 0, 's' }, |
808 | { "interval", 1, 0, 't' }, | |
809 | { "version", 0, 0, 'V' }, | |
810 | { "zeros", 0, 0, 'z' }, | |
5a52102b | 811 | { "extended", 1, 0, 'x'}, |
9f3ea250 SH |
812 | { 0 } |
813 | }; | |
aba5acdf SH |
814 | |
815 | int main(int argc, char *argv[]) | |
816 | { | |
817 | char hist_name[128]; | |
818 | struct sockaddr_un sun; | |
819 | FILE *hist_fp = NULL; | |
5a52102b | 820 | const char *stats_type = NULL; |
aba5acdf SH |
821 | int ch; |
822 | int fd; | |
823 | ||
5a52102b NF |
824 | is_extended = false; |
825 | while ((ch = getopt_long(argc, argv, "hjpvVzrnasd:t:ex:", | |
9f3ea250 | 826 | longopts, NULL)) != EOF) { |
acd1e437 | 827 | switch (ch) { |
aba5acdf SH |
828 | case 'z': |
829 | dump_zeros = 1; | |
830 | break; | |
831 | case 'r': | |
832 | reset_history = 1; | |
833 | break; | |
834 | case 'a': | |
835 | ignore_history = 1; | |
836 | break; | |
837 | case 's': | |
838 | no_update = 1; | |
839 | break; | |
840 | case 'n': | |
841 | no_output = 1; | |
842 | break; | |
843 | case 'e': | |
844 | show_errors = 1; | |
845 | break; | |
ec3e625c SH |
846 | case 'j': |
847 | json_output = 1; | |
848 | break; | |
fcc16c22 SH |
849 | case 'p': |
850 | pretty = 1; | |
851 | break; | |
aba5acdf | 852 | case 'd': |
9f3ea250 SH |
853 | scan_interval = atoi(optarg) * 1000; |
854 | if (scan_interval <= 0) { | |
855 | fprintf(stderr, "ifstat: invalid scan interval\n"); | |
856 | exit(-1); | |
857 | } | |
aba5acdf SH |
858 | break; |
859 | case 't': | |
9f3ea250 SH |
860 | time_constant = atoi(optarg); |
861 | if (time_constant <= 0) { | |
aba5acdf SH |
862 | fprintf(stderr, "ifstat: invalid time constant divisor\n"); |
863 | exit(-1); | |
864 | } | |
865 | break; | |
5a52102b NF |
866 | case 'x': |
867 | stats_type = optarg; | |
868 | is_extended = true; | |
869 | break; | |
aba5acdf SH |
870 | case 'v': |
871 | case 'V': | |
fbef6555 | 872 | printf("ifstat utility, iproute2-%s\n", version); |
aba5acdf SH |
873 | exit(0); |
874 | case 'h': | |
875 | case '?': | |
876 | default: | |
877 | usage(); | |
878 | } | |
879 | } | |
880 | ||
881 | argc -= optind; | |
882 | argv += optind; | |
883 | ||
5a52102b NF |
884 | if (stats_type) { |
885 | stats_type = get_filter_type(stats_type); | |
886 | if (!stats_type) | |
887 | exit(-1); | |
888 | } | |
889 | ||
aba5acdf SH |
890 | sun.sun_family = AF_UNIX; |
891 | sun.sun_path[0] = 0; | |
892 | sprintf(sun.sun_path+1, "ifstat%d", getuid()); | |
893 | ||
894 | if (scan_interval > 0) { | |
895 | if (time_constant == 0) | |
896 | time_constant = 60; | |
897 | time_constant *= 1000; | |
898 | W = 1 - 1/exp(log(10)*(double)scan_interval/time_constant); | |
899 | if ((fd = socket(AF_UNIX, SOCK_STREAM, 0)) < 0) { | |
900 | perror("ifstat: socket"); | |
901 | exit(-1); | |
902 | } | |
acd1e437 | 903 | if (bind(fd, (struct sockaddr *)&sun, 2+1+strlen(sun.sun_path+1)) < 0) { |
aba5acdf SH |
904 | perror("ifstat: bind"); |
905 | exit(-1); | |
906 | } | |
907 | if (listen(fd, 5) < 0) { | |
908 | perror("ifstat: listen"); | |
909 | exit(-1); | |
910 | } | |
a7a9ddbb MF |
911 | if (daemon(0, 0)) { |
912 | perror("ifstat: daemon"); | |
913 | exit(-1); | |
914 | } | |
aba5acdf SH |
915 | signal(SIGPIPE, SIG_IGN); |
916 | signal(SIGCHLD, sigchild); | |
917 | server_loop(fd); | |
918 | exit(0); | |
919 | } | |
920 | ||
921 | patterns = argv; | |
922 | npatterns = argc; | |
923 | ||
924 | if (getenv("IFSTAT_HISTORY")) | |
daf7bd5c SH |
925 | snprintf(hist_name, sizeof(hist_name), |
926 | "%s", getenv("IFSTAT_HISTORY")); | |
aba5acdf | 927 | else |
5a52102b NF |
928 | if (!stats_type) |
929 | snprintf(hist_name, sizeof(hist_name), | |
930 | "%s/.ifstat.u%d", P_tmpdir, getuid()); | |
931 | else | |
932 | snprintf(hist_name, sizeof(hist_name), | |
933 | "%s/.%s_ifstat.u%d", P_tmpdir, stats_type, | |
934 | getuid()); | |
aba5acdf SH |
935 | |
936 | if (reset_history) | |
937 | unlink(hist_name); | |
938 | ||
939 | if (!ignore_history || !no_update) { | |
940 | struct stat stb; | |
941 | ||
942 | fd = open(hist_name, O_RDWR|O_CREAT|O_NOFOLLOW, 0600); | |
943 | if (fd < 0) { | |
944 | perror("ifstat: open history file"); | |
945 | exit(-1); | |
946 | } | |
947 | if ((hist_fp = fdopen(fd, "r+")) == NULL) { | |
948 | perror("ifstat: fdopen history file"); | |
949 | exit(-1); | |
950 | } | |
951 | if (flock(fileno(hist_fp), LOCK_EX)) { | |
952 | perror("ifstat: flock history file"); | |
953 | exit(-1); | |
954 | } | |
955 | if (fstat(fileno(hist_fp), &stb) != 0) { | |
956 | perror("ifstat: fstat history file"); | |
957 | exit(-1); | |
958 | } | |
959 | if (stb.st_nlink != 1 || stb.st_uid != getuid()) { | |
960 | fprintf(stderr, "ifstat: something is so wrong with history file, that I prefer not to proceed.\n"); | |
961 | exit(-1); | |
962 | } | |
963 | if (!ignore_history) { | |
964 | FILE *tfp; | |
9a230771 | 965 | long uptime = -1; |
acd1e437 | 966 | |
aba5acdf SH |
967 | if ((tfp = fopen("/proc/uptime", "r")) != NULL) { |
968 | if (fscanf(tfp, "%ld", &uptime) != 1) | |
969 | uptime = -1; | |
970 | fclose(tfp); | |
971 | } | |
972 | if (uptime >= 0 && time(NULL) >= stb.st_mtime+uptime) { | |
973 | fprintf(stderr, "ifstat: history is aged out, resetting\n"); | |
d572ed4d PS |
974 | if (ftruncate(fileno(hist_fp), 0)) |
975 | perror("ifstat: ftruncate"); | |
aba5acdf SH |
976 | } |
977 | } | |
978 | ||
979 | load_raw_table(hist_fp); | |
980 | ||
981 | hist_db = kern_db; | |
982 | kern_db = NULL; | |
983 | } | |
984 | ||
985 | if ((fd = socket(AF_UNIX, SOCK_STREAM, 0)) >= 0 && | |
acd1e437 | 986 | (connect(fd, (struct sockaddr *)&sun, 2+1+strlen(sun.sun_path+1)) == 0 |
aba5acdf | 987 | || (strcpy(sun.sun_path+1, "ifstat0"), |
acd1e437 | 988 | connect(fd, (struct sockaddr *)&sun, 2+1+strlen(sun.sun_path+1)) == 0)) |
aba5acdf SH |
989 | && verify_forging(fd) == 0) { |
990 | FILE *sfp = fdopen(fd, "r"); | |
acd1e437 | 991 | |
6d02518f PS |
992 | if (!sfp) { |
993 | fprintf(stderr, "ifstat: fdopen failed: %s\n", | |
994 | strerror(errno)); | |
995 | close(fd); | |
996 | } else { | |
997 | load_raw_table(sfp); | |
998 | if (hist_db && source_mismatch) { | |
999 | fprintf(stderr, "ifstat: history is stale, ignoring it.\n"); | |
1000 | hist_db = NULL; | |
1001 | } | |
1002 | fclose(sfp); | |
aba5acdf | 1003 | } |
aba5acdf SH |
1004 | } else { |
1005 | if (fd >= 0) | |
1006 | close(fd); | |
1007 | if (hist_db && info_source[0] && strcmp(info_source, "kernel")) { | |
1008 | fprintf(stderr, "ifstat: history is stale, ignoring it.\n"); | |
1009 | hist_db = NULL; | |
1010 | info_source[0] = 0; | |
1011 | } | |
1012 | load_info(); | |
1013 | if (info_source[0] == 0) | |
1014 | strcpy(info_source, "kernel"); | |
1015 | } | |
1016 | ||
1017 | if (!no_output) { | |
1018 | if (ignore_history || hist_db == NULL) | |
1019 | dump_kern_db(stdout); | |
1020 | else | |
1021 | dump_incr_db(stdout); | |
1022 | } | |
ec3e625c | 1023 | |
aba5acdf | 1024 | if (!no_update) { |
d572ed4d PS |
1025 | if (ftruncate(fileno(hist_fp), 0)) |
1026 | perror("ifstat: ftruncate"); | |
aba5acdf | 1027 | rewind(hist_fp); |
ec3e625c SH |
1028 | |
1029 | json_output = 0; | |
aba5acdf | 1030 | dump_raw_db(hist_fp, 1); |
ec3e625c | 1031 | fclose(hist_fp); |
aba5acdf SH |
1032 | } |
1033 | exit(0); | |
1034 | } |