]>
Commit | Line | Data |
---|---|---|
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" | |
36 | #include "SNAPSHOT.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++) { |
aba5acdf SH |
107 | if (!fnmatch(patterns[i], id, 0)) |
108 | return 1; | |
109 | } | |
110 | return 0; | |
111 | } | |
112 | ||
5a52102b NF |
113 | static int get_nlmsg_extended(const struct sockaddr_nl *who, |
114 | struct nlmsghdr *m, void *arg) | |
115 | { | |
116 | struct if_stats_msg *ifsm = NLMSG_DATA(m); | |
117 | struct rtattr *tb[IFLA_STATS_MAX+1]; | |
118 | int len = m->nlmsg_len; | |
119 | struct ifstat_ent *n; | |
120 | ||
121 | if (m->nlmsg_type != RTM_NEWSTATS) | |
122 | return 0; | |
123 | ||
124 | len -= NLMSG_LENGTH(sizeof(*ifsm)); | |
125 | if (len < 0) | |
126 | return -1; | |
127 | ||
128 | parse_rtattr(tb, IFLA_STATS_MAX, IFLA_STATS_RTA(ifsm), len); | |
129 | if (tb[filter_type] == NULL) | |
130 | return 0; | |
131 | ||
132 | n = malloc(sizeof(*n)); | |
133 | if (!n) | |
134 | abort(); | |
135 | ||
136 | n->ifindex = ifsm->ifindex; | |
137 | n->name = strdup(ll_index_to_name(ifsm->ifindex)); | |
138 | ||
139 | if (sub_type == NO_SUB_TYPE) { | |
140 | memcpy(&n->val, RTA_DATA(tb[filter_type]), sizeof(n->val)); | |
141 | } else { | |
142 | struct rtattr *attr; | |
143 | ||
144 | attr = parse_rtattr_one_nested(sub_type, tb[filter_type]); | |
35f6adef PS |
145 | if (attr == NULL) { |
146 | free(n); | |
5a52102b | 147 | return 0; |
35f6adef | 148 | } |
5a52102b NF |
149 | memcpy(&n->val, RTA_DATA(attr), sizeof(n->val)); |
150 | } | |
151 | memset(&n->rate, 0, sizeof(n->rate)); | |
152 | n->next = kern_db; | |
153 | kern_db = n; | |
154 | return 0; | |
155 | } | |
156 | ||
ae665a52 | 157 | static int get_nlmsg(const struct sockaddr_nl *who, |
50772dc5 | 158 | struct nlmsghdr *m, void *arg) |
aba5acdf SH |
159 | { |
160 | struct ifinfomsg *ifi = NLMSG_DATA(m); | |
acd1e437 | 161 | struct rtattr *tb[IFLA_MAX+1]; |
aba5acdf SH |
162 | int len = m->nlmsg_len; |
163 | struct ifstat_ent *n; | |
164 | int i; | |
165 | ||
166 | if (m->nlmsg_type != RTM_NEWLINK) | |
167 | return 0; | |
168 | ||
169 | len -= NLMSG_LENGTH(sizeof(*ifi)); | |
170 | if (len < 0) | |
171 | return -1; | |
172 | ||
173 | if (!(ifi->ifi_flags&IFF_UP)) | |
174 | return 0; | |
175 | ||
aba5acdf SH |
176 | parse_rtattr(tb, IFLA_MAX, IFLA_RTA(ifi), len); |
177 | if (tb[IFLA_IFNAME] == NULL || tb[IFLA_STATS] == NULL) | |
178 | return 0; | |
179 | ||
180 | n = malloc(sizeof(*n)); | |
181 | if (!n) | |
182 | abort(); | |
183 | n->ifindex = ifi->ifi_index; | |
184 | n->name = strdup(RTA_DATA(tb[IFLA_IFNAME])); | |
185 | memcpy(&n->ival, RTA_DATA(tb[IFLA_STATS]), sizeof(n->ival)); | |
186 | memset(&n->rate, 0, sizeof(n->rate)); | |
acd1e437 | 187 | for (i = 0; i < MAXS; i++) |
aba5acdf SH |
188 | n->val[i] = n->ival[i]; |
189 | n->next = kern_db; | |
190 | kern_db = n; | |
191 | return 0; | |
192 | } | |
193 | ||
d1f28cf1 | 194 | static void load_info(void) |
aba5acdf SH |
195 | { |
196 | struct ifstat_ent *db, *n; | |
197 | struct rtnl_handle rth; | |
5a52102b | 198 | __u32 filter_mask; |
aba5acdf SH |
199 | |
200 | if (rtnl_open(&rth, 0) < 0) | |
201 | exit(1); | |
202 | ||
5a52102b NF |
203 | if (is_extended) { |
204 | ll_init_map(&rth); | |
205 | filter_mask = IFLA_STATS_FILTER_BIT(filter_type); | |
206 | if (rtnl_wilddump_stats_req_filter(&rth, AF_UNSPEC, RTM_GETSTATS, | |
207 | filter_mask) < 0) { | |
208 | perror("Cannot send dump request"); | |
209 | exit(1); | |
210 | } | |
aba5acdf | 211 | |
5a52102b NF |
212 | if (rtnl_dump_filter(&rth, get_nlmsg_extended, NULL) < 0) { |
213 | fprintf(stderr, "Dump terminated\n"); | |
214 | exit(1); | |
215 | } | |
216 | } else { | |
31ae2912 | 217 | if (rtnl_linkdump_req(&rth, AF_INET) < 0) { |
5a52102b NF |
218 | perror("Cannot send dump request"); |
219 | exit(1); | |
220 | } | |
221 | ||
222 | if (rtnl_dump_filter(&rth, get_nlmsg, NULL) < 0) { | |
223 | fprintf(stderr, "Dump terminated\n"); | |
224 | exit(1); | |
225 | } | |
aba5acdf SH |
226 | } |
227 | ||
228 | rtnl_close(&rth); | |
229 | ||
230 | db = kern_db; | |
231 | kern_db = NULL; | |
232 | ||
233 | while (db) { | |
234 | n = db; | |
235 | db = db->next; | |
236 | n->next = kern_db; | |
237 | kern_db = n; | |
238 | } | |
239 | } | |
240 | ||
d1f28cf1 | 241 | static void load_raw_table(FILE *fp) |
aba5acdf SH |
242 | { |
243 | char buf[4096]; | |
244 | struct ifstat_ent *db = NULL; | |
245 | struct ifstat_ent *n; | |
246 | ||
247 | while (fgets(buf, sizeof(buf), fp) != NULL) { | |
248 | char *p; | |
249 | char *next; | |
250 | int i; | |
251 | ||
252 | if (buf[0] == '#') { | |
253 | buf[strlen(buf)-1] = 0; | |
254 | if (info_source[0] && strcmp(info_source, buf+1)) | |
255 | source_mismatch = 1; | |
256 | strncpy(info_source, buf+1, sizeof(info_source)-1); | |
257 | continue; | |
258 | } | |
259 | if ((n = malloc(sizeof(*n))) == NULL) | |
260 | abort(); | |
261 | ||
262 | if (!(p = strchr(buf, ' '))) | |
263 | abort(); | |
264 | *p++ = 0; | |
265 | ||
266 | if (sscanf(buf, "%d", &n->ifindex) != 1) | |
267 | abort(); | |
268 | if (!(next = strchr(p, ' '))) | |
269 | abort(); | |
270 | *next++ = 0; | |
271 | ||
272 | n->name = strdup(p); | |
273 | p = next; | |
274 | ||
acd1e437 SH |
275 | for (i = 0; i < MAXS; i++) { |
276 | unsigned int rate; | |
277 | ||
aba5acdf SH |
278 | if (!(next = strchr(p, ' '))) |
279 | abort(); | |
280 | *next++ = 0; | |
281 | if (sscanf(p, "%llu", n->val+i) != 1) | |
282 | abort(); | |
a571587d | 283 | n->ival[i] = (__u32)n->val[i]; |
aba5acdf SH |
284 | p = next; |
285 | if (!(next = strchr(p, ' '))) | |
286 | abort(); | |
287 | *next++ = 0; | |
288 | if (sscanf(p, "%u", &rate) != 1) | |
289 | abort(); | |
290 | n->rate[i] = rate; | |
291 | p = next; | |
292 | } | |
293 | n->next = db; | |
294 | db = n; | |
295 | } | |
296 | ||
297 | while (db) { | |
298 | n = db; | |
299 | db = db->next; | |
300 | n->next = kern_db; | |
301 | kern_db = n; | |
302 | } | |
303 | } | |
304 | ||
d1f28cf1 | 305 | static void dump_raw_db(FILE *fp, int to_hist) |
aba5acdf | 306 | { |
fcc16c22 | 307 | json_writer_t *jw = json_output ? jsonw_new(fp) : NULL; |
aba5acdf | 308 | struct ifstat_ent *n, *h; |
ec3e625c | 309 | |
aba5acdf | 310 | h = hist_db; |
fcc16c22 | 311 | if (jw) { |
d721a145 | 312 | jsonw_start_object(jw); |
fcc16c22 SH |
313 | jsonw_pretty(jw, pretty); |
314 | jsonw_name(jw, info_source); | |
315 | jsonw_start_object(jw); | |
316 | } else | |
ec3e625c | 317 | fprintf(fp, "#%s\n", info_source); |
aba5acdf | 318 | |
acd1e437 | 319 | for (n = kern_db; n; n = n->next) { |
aba5acdf SH |
320 | int i; |
321 | unsigned long long *vals = n->val; | |
322 | double *rates = n->rate; | |
acd1e437 | 323 | |
aba5acdf SH |
324 | if (!match(n->name)) { |
325 | struct ifstat_ent *h1; | |
acd1e437 | 326 | |
aba5acdf SH |
327 | if (!to_hist) |
328 | continue; | |
329 | for (h1 = h; h1; h1 = h1->next) { | |
330 | if (h1->ifindex == n->ifindex) { | |
331 | vals = h1->val; | |
332 | rates = h1->rate; | |
333 | h = h1->next; | |
334 | break; | |
335 | } | |
336 | } | |
337 | } | |
ec3e625c | 338 | |
fcc16c22 SH |
339 | if (jw) { |
340 | jsonw_name(jw, n->name); | |
341 | jsonw_start_object(jw); | |
1473bda9 | 342 | |
acd1e437 | 343 | for (i = 0; i < MAXS && stats[i]; i++) |
fcc16c22 SH |
344 | jsonw_uint_field(jw, stats[i], vals[i]); |
345 | jsonw_end_object(jw); | |
ec3e625c SH |
346 | } else { |
347 | fprintf(fp, "%d %s ", n->ifindex, n->name); | |
acd1e437 | 348 | for (i = 0; i < MAXS; i++) |
3d0b7439 | 349 | fprintf(fp, "%llu %u ", vals[i], |
acd1e437 | 350 | (unsigned int)rates[i]); |
ec3e625c SH |
351 | fprintf(fp, "\n"); |
352 | } | |
aba5acdf | 353 | } |
fcc16c22 | 354 | if (jw) { |
d721a145 AK |
355 | jsonw_end_object(jw); |
356 | ||
fcc16c22 SH |
357 | jsonw_end_object(jw); |
358 | jsonw_destroy(&jw); | |
359 | } | |
aba5acdf SH |
360 | } |
361 | ||
9f3ea250 SH |
362 | /* use communication definitions of meg/kilo etc */ |
363 | static const unsigned long long giga = 1000000000ull; | |
bb6a21a4 SH |
364 | static const unsigned long long mega = 1000000; |
365 | static const unsigned long long kilo = 1000; | |
aba5acdf | 366 | |
ec3e625c SH |
367 | static void format_rate(FILE *fp, const unsigned long long *vals, |
368 | const double *rates, int i) | |
aba5acdf SH |
369 | { |
370 | char temp[64]; | |
ec3e625c | 371 | |
9f3ea250 SH |
372 | if (vals[i] > giga) |
373 | fprintf(fp, "%7lluM ", vals[i]/mega); | |
374 | else if (vals[i] > mega) | |
375 | fprintf(fp, "%7lluK ", vals[i]/kilo); | |
aba5acdf SH |
376 | else |
377 | fprintf(fp, "%8llu ", vals[i]); | |
378 | ||
9f3ea250 | 379 | if (rates[i] > mega) { |
acd1e437 | 380 | sprintf(temp, "%uM", (unsigned int)(rates[i]/mega)); |
aba5acdf | 381 | fprintf(fp, "%-6s ", temp); |
9f3ea250 | 382 | } else if (rates[i] > kilo) { |
acd1e437 | 383 | sprintf(temp, "%uK", (unsigned int)(rates[i]/kilo)); |
aba5acdf SH |
384 | fprintf(fp, "%-6s ", temp); |
385 | } else | |
acd1e437 | 386 | fprintf(fp, "%-6u ", (unsigned int)rates[i]); |
aba5acdf SH |
387 | } |
388 | ||
ec3e625c | 389 | static void format_pair(FILE *fp, const unsigned long long *vals, int i, int k) |
aba5acdf SH |
390 | { |
391 | char temp[64]; | |
acd1e437 | 392 | |
9f3ea250 SH |
393 | if (vals[i] > giga) |
394 | fprintf(fp, "%7lluM ", vals[i]/mega); | |
395 | else if (vals[i] > mega) | |
396 | fprintf(fp, "%7lluK ", vals[i]/kilo); | |
aba5acdf SH |
397 | else |
398 | fprintf(fp, "%8llu ", vals[i]); | |
399 | ||
9f3ea250 | 400 | if (vals[k] > giga) { |
acd1e437 | 401 | sprintf(temp, "%uM", (unsigned int)(vals[k]/mega)); |
aba5acdf | 402 | fprintf(fp, "%-6s ", temp); |
9f3ea250 | 403 | } else if (vals[k] > mega) { |
acd1e437 | 404 | sprintf(temp, "%uK", (unsigned int)(vals[k]/kilo)); |
aba5acdf SH |
405 | fprintf(fp, "%-6s ", temp); |
406 | } else | |
acd1e437 | 407 | fprintf(fp, "%-6u ", (unsigned int)vals[k]); |
aba5acdf SH |
408 | } |
409 | ||
d1f28cf1 | 410 | static void print_head(FILE *fp) |
aba5acdf SH |
411 | { |
412 | fprintf(fp, "#%s\n", info_source); | |
413 | fprintf(fp, "%-15s ", "Interface"); | |
414 | ||
415 | fprintf(fp, "%8s/%-6s ", "RX Pkts", "Rate"); | |
416 | fprintf(fp, "%8s/%-6s ", "TX Pkts", "Rate"); | |
417 | fprintf(fp, "%8s/%-6s ", "RX Data", "Rate"); | |
acd1e437 | 418 | fprintf(fp, "%8s/%-6s\n", "TX Data", "Rate"); |
aba5acdf SH |
419 | |
420 | if (!show_errors) { | |
421 | fprintf(fp, "%-15s ", ""); | |
422 | fprintf(fp, "%8s/%-6s ", "RX Errs", "Drop"); | |
423 | fprintf(fp, "%8s/%-6s ", "TX Errs", "Drop"); | |
424 | fprintf(fp, "%8s/%-6s ", "RX Over", "Rate"); | |
acd1e437 | 425 | fprintf(fp, "%8s/%-6s\n", "TX Coll", "Rate"); |
aba5acdf SH |
426 | } else { |
427 | fprintf(fp, "%-15s ", ""); | |
428 | fprintf(fp, "%8s/%-6s ", "RX Errs", "Rate"); | |
429 | fprintf(fp, "%8s/%-6s ", "RX Drop", "Rate"); | |
430 | fprintf(fp, "%8s/%-6s ", "RX Over", "Rate"); | |
acd1e437 | 431 | fprintf(fp, "%8s/%-6s\n", "RX Leng", "Rate"); |
aba5acdf SH |
432 | |
433 | fprintf(fp, "%-15s ", ""); | |
434 | fprintf(fp, "%8s/%-6s ", "RX Crc", "Rate"); | |
435 | fprintf(fp, "%8s/%-6s ", "RX Frm", "Rate"); | |
436 | fprintf(fp, "%8s/%-6s ", "RX Fifo", "Rate"); | |
acd1e437 | 437 | fprintf(fp, "%8s/%-6s\n", "RX Miss", "Rate"); |
aba5acdf SH |
438 | |
439 | fprintf(fp, "%-15s ", ""); | |
440 | fprintf(fp, "%8s/%-6s ", "TX Errs", "Rate"); | |
441 | fprintf(fp, "%8s/%-6s ", "TX Drop", "Rate"); | |
442 | fprintf(fp, "%8s/%-6s ", "TX Coll", "Rate"); | |
acd1e437 | 443 | fprintf(fp, "%8s/%-6s\n", "TX Carr", "Rate"); |
aba5acdf SH |
444 | |
445 | fprintf(fp, "%-15s ", ""); | |
446 | fprintf(fp, "%8s/%-6s ", "TX Abrt", "Rate"); | |
447 | fprintf(fp, "%8s/%-6s ", "TX Fifo", "Rate"); | |
448 | fprintf(fp, "%8s/%-6s ", "TX Hear", "Rate"); | |
acd1e437 | 449 | fprintf(fp, "%8s/%-6s\n", "TX Wind", "Rate"); |
aba5acdf SH |
450 | } |
451 | } | |
452 | ||
fcc16c22 | 453 | static void print_one_json(json_writer_t *jw, const struct ifstat_ent *n, |
ec3e625c SH |
454 | const unsigned long long *vals) |
455 | { | |
fcc16c22 SH |
456 | int i, m = show_errors ? 20 : 10; |
457 | ||
458 | jsonw_name(jw, n->name); | |
459 | jsonw_start_object(jw); | |
460 | ||
acd1e437 | 461 | for (i = 0; i < m && stats[i]; i++) |
fcc16c22 SH |
462 | jsonw_uint_field(jw, stats[i], vals[i]); |
463 | ||
464 | jsonw_end_object(jw); | |
ec3e625c SH |
465 | } |
466 | ||
467 | static void print_one_if(FILE *fp, const struct ifstat_ent *n, | |
468 | const unsigned long long *vals) | |
aba5acdf SH |
469 | { |
470 | int i; | |
ec3e625c | 471 | |
aba5acdf | 472 | fprintf(fp, "%-15s ", n->name); |
acd1e437 | 473 | for (i = 0; i < 4; i++) |
aba5acdf SH |
474 | format_rate(fp, vals, n->rate, i); |
475 | fprintf(fp, "\n"); | |
476 | ||
477 | if (!show_errors) { | |
478 | fprintf(fp, "%-15s ", ""); | |
479 | format_pair(fp, vals, 4, 6); | |
480 | format_pair(fp, vals, 5, 7); | |
481 | format_rate(fp, vals, n->rate, 11); | |
482 | format_rate(fp, vals, n->rate, 9); | |
483 | fprintf(fp, "\n"); | |
484 | } else { | |
485 | fprintf(fp, "%-15s ", ""); | |
486 | format_rate(fp, vals, n->rate, 4); | |
487 | format_rate(fp, vals, n->rate, 6); | |
488 | format_rate(fp, vals, n->rate, 11); | |
489 | format_rate(fp, vals, n->rate, 10); | |
490 | fprintf(fp, "\n"); | |
491 | ||
492 | fprintf(fp, "%-15s ", ""); | |
493 | format_rate(fp, vals, n->rate, 12); | |
494 | format_rate(fp, vals, n->rate, 13); | |
495 | format_rate(fp, vals, n->rate, 14); | |
496 | format_rate(fp, vals, n->rate, 15); | |
497 | fprintf(fp, "\n"); | |
498 | ||
499 | fprintf(fp, "%-15s ", ""); | |
500 | format_rate(fp, vals, n->rate, 5); | |
501 | format_rate(fp, vals, n->rate, 7); | |
502 | format_rate(fp, vals, n->rate, 9); | |
503 | format_rate(fp, vals, n->rate, 17); | |
504 | fprintf(fp, "\n"); | |
505 | ||
506 | fprintf(fp, "%-15s ", ""); | |
507 | format_rate(fp, vals, n->rate, 16); | |
508 | format_rate(fp, vals, n->rate, 18); | |
509 | format_rate(fp, vals, n->rate, 19); | |
510 | format_rate(fp, vals, n->rate, 20); | |
511 | fprintf(fp, "\n"); | |
512 | } | |
513 | } | |
514 | ||
d1f28cf1 | 515 | static void dump_kern_db(FILE *fp) |
aba5acdf | 516 | { |
fcc16c22 | 517 | json_writer_t *jw = json_output ? jsonw_new(fp) : NULL; |
dc484542 | 518 | struct ifstat_ent *n; |
aba5acdf | 519 | |
fcc16c22 | 520 | if (jw) { |
d721a145 | 521 | jsonw_start_object(jw); |
fcc16c22 SH |
522 | jsonw_pretty(jw, pretty); |
523 | jsonw_name(jw, info_source); | |
524 | jsonw_start_object(jw); | |
525 | } else | |
ec3e625c | 526 | print_head(fp); |
aba5acdf | 527 | |
acd1e437 | 528 | for (n = kern_db; n; n = n->next) { |
aba5acdf SH |
529 | if (!match(n->name)) |
530 | continue; | |
ec3e625c | 531 | |
fcc16c22 SH |
532 | if (jw) |
533 | print_one_json(jw, n, n->val); | |
534 | else | |
ec3e625c | 535 | print_one_if(fp, n, n->val); |
aba5acdf | 536 | } |
b530cef0 PS |
537 | if (jw) { |
538 | jsonw_end_object(jw); | |
539 | ||
540 | jsonw_end_object(jw); | |
541 | jsonw_destroy(&jw); | |
542 | } | |
aba5acdf SH |
543 | } |
544 | ||
d1f28cf1 | 545 | static void dump_incr_db(FILE *fp) |
aba5acdf SH |
546 | { |
547 | struct ifstat_ent *n, *h; | |
fcc16c22 | 548 | json_writer_t *jw = json_output ? jsonw_new(fp) : NULL; |
aba5acdf | 549 | |
ec3e625c | 550 | h = hist_db; |
fcc16c22 | 551 | if (jw) { |
d721a145 | 552 | jsonw_start_object(jw); |
fcc16c22 SH |
553 | jsonw_pretty(jw, pretty); |
554 | jsonw_name(jw, info_source); | |
555 | jsonw_start_object(jw); | |
556 | } else | |
ec3e625c | 557 | print_head(fp); |
aba5acdf | 558 | |
acd1e437 | 559 | for (n = kern_db; n; n = n->next) { |
aba5acdf SH |
560 | int i; |
561 | unsigned long long vals[MAXS]; | |
562 | struct ifstat_ent *h1; | |
563 | ||
564 | memcpy(vals, n->val, sizeof(vals)); | |
565 | ||
566 | for (h1 = h; h1; h1 = h1->next) { | |
567 | if (h1->ifindex == n->ifindex) { | |
568 | for (i = 0; i < MAXS; i++) | |
569 | vals[i] -= h1->val[i]; | |
570 | h = h1->next; | |
571 | break; | |
572 | } | |
573 | } | |
574 | if (!match(n->name)) | |
575 | continue; | |
ec3e625c | 576 | |
fcc16c22 SH |
577 | if (jw) |
578 | print_one_json(jw, n, n->val); | |
579 | else | |
ec3e625c | 580 | print_one_if(fp, n, vals); |
aba5acdf | 581 | } |
aba5acdf | 582 | |
fcc16c22 | 583 | if (jw) { |
d721a145 AK |
584 | jsonw_end_object(jw); |
585 | ||
fcc16c22 SH |
586 | jsonw_end_object(jw); |
587 | jsonw_destroy(&jw); | |
588 | } | |
589 | } | |
aba5acdf SH |
590 | |
591 | static int children; | |
592 | ||
d1f28cf1 | 593 | static void sigchild(int signo) |
aba5acdf SH |
594 | { |
595 | } | |
596 | ||
d1f28cf1 | 597 | static void update_db(int interval) |
aba5acdf SH |
598 | { |
599 | struct ifstat_ent *n, *h; | |
600 | ||
601 | n = kern_db; | |
602 | kern_db = NULL; | |
603 | ||
604 | load_info(); | |
605 | ||
606 | h = kern_db; | |
607 | kern_db = n; | |
608 | ||
609 | for (n = kern_db; n; n = n->next) { | |
610 | struct ifstat_ent *h1; | |
acd1e437 | 611 | |
aba5acdf SH |
612 | for (h1 = h; h1; h1 = h1->next) { |
613 | if (h1->ifindex == n->ifindex) { | |
614 | int i; | |
acd1e437 | 615 | |
aba5acdf SH |
616 | for (i = 0; i < MAXS; i++) { |
617 | if ((long)(h1->ival[i] - n->ival[i]) < 0) { | |
ae665a52 | 618 | memset(n->ival, 0, sizeof(n->ival)); |
aba5acdf SH |
619 | break; |
620 | } | |
621 | } | |
ae665a52 | 622 | for (i = 0; i < MAXS; i++) { |
aba5acdf | 623 | double sample; |
5a52102b NF |
624 | __u64 incr; |
625 | ||
626 | if (is_extended) { | |
627 | incr = h1->val[i] - n->val[i]; | |
628 | n->val[i] = h1->val[i]; | |
629 | } else { | |
630 | incr = (__u32) (h1->ival[i] - n->ival[i]); | |
631 | n->val[i] += incr; | |
632 | n->ival[i] = h1->ival[i]; | |
633 | } | |
acd1e437 | 634 | |
aba5acdf SH |
635 | sample = (double)(incr*1000)/interval; |
636 | if (interval >= scan_interval) { | |
637 | n->rate[i] += W*(sample-n->rate[i]); | |
638 | } else if (interval >= 1000) { | |
639 | if (interval >= time_constant) { | |
640 | n->rate[i] = sample; | |
641 | } else { | |
642 | double w = W*(double)interval/scan_interval; | |
acd1e437 | 643 | |
aba5acdf SH |
644 | n->rate[i] += w*(sample-n->rate[i]); |
645 | } | |
646 | } | |
647 | } | |
648 | ||
649 | while (h != h1) { | |
650 | struct ifstat_ent *tmp = h; | |
acd1e437 | 651 | |
aba5acdf SH |
652 | h = h->next; |
653 | free(tmp->name); | |
654 | free(tmp); | |
655 | }; | |
656 | h = h1->next; | |
657 | free(h1->name); | |
658 | free(h1); | |
659 | break; | |
660 | } | |
661 | } | |
662 | } | |
663 | } | |
664 | ||
acd1e437 | 665 | #define T_DIFF(a, b) (((a).tv_sec-(b).tv_sec)*1000 + ((a).tv_usec-(b).tv_usec)/1000) |
aba5acdf SH |
666 | |
667 | ||
d1f28cf1 | 668 | static void server_loop(int fd) |
aba5acdf | 669 | { |
737f15f6 | 670 | struct timeval snaptime = { 0 }; |
aba5acdf | 671 | struct pollfd p; |
acd1e437 | 672 | |
aba5acdf SH |
673 | p.fd = fd; |
674 | p.events = p.revents = POLLIN; | |
675 | ||
676 | sprintf(info_source, "%d.%lu sampling_interval=%d time_const=%d", | |
677 | getpid(), (unsigned long)random(), scan_interval/1000, time_constant/1000); | |
678 | ||
679 | load_info(); | |
680 | ||
681 | for (;;) { | |
682 | int status; | |
dd81ee04 | 683 | time_t tdiff; |
aba5acdf | 684 | struct timeval now; |
737f15f6 | 685 | |
aba5acdf SH |
686 | gettimeofday(&now, NULL); |
687 | tdiff = T_DIFF(now, snaptime); | |
688 | if (tdiff >= scan_interval) { | |
689 | update_db(tdiff); | |
690 | snaptime = now; | |
691 | tdiff = 0; | |
692 | } | |
737f15f6 | 693 | |
dd81ee04 | 694 | if (poll(&p, 1, scan_interval - tdiff) > 0 |
aba5acdf SH |
695 | && (p.revents&POLLIN)) { |
696 | int clnt = accept(fd, NULL, NULL); | |
acd1e437 | 697 | |
aba5acdf SH |
698 | if (clnt >= 0) { |
699 | pid_t pid; | |
acd1e437 | 700 | |
aba5acdf SH |
701 | if (children >= 5) { |
702 | close(clnt); | |
703 | } else if ((pid = fork()) != 0) { | |
acd1e437 | 704 | if (pid > 0) |
aba5acdf SH |
705 | children++; |
706 | close(clnt); | |
707 | } else { | |
708 | FILE *fp = fdopen(clnt, "w"); | |
acd1e437 | 709 | |
dd81ee04 | 710 | if (fp) |
aba5acdf | 711 | dump_raw_db(fp, 0); |
aba5acdf SH |
712 | exit(0); |
713 | } | |
714 | } | |
715 | } | |
716 | while (children && waitpid(-1, &status, WNOHANG) > 0) | |
717 | children--; | |
718 | } | |
719 | } | |
720 | ||
d1f28cf1 | 721 | static int verify_forging(int fd) |
aba5acdf SH |
722 | { |
723 | struct ucred cred; | |
737f15f6 SH |
724 | socklen_t olen = sizeof(cred); |
725 | ||
acd1e437 | 726 | if (getsockopt(fd, SOL_SOCKET, SO_PEERCRED, (void *)&cred, &olen) || |
aba5acdf SH |
727 | olen < sizeof(cred)) |
728 | return -1; | |
729 | if (cred.uid == getuid() || cred.uid == 0) | |
730 | return 0; | |
731 | return -1; | |
732 | } | |
733 | ||
5a52102b NF |
734 | static void xstat_usage(void) |
735 | { | |
736 | fprintf(stderr, | |
1c2df613 NF |
737 | "Usage: ifstat supported xstats:\n" |
738 | " cpu_hits Counts only packets that went via the CPU.\n"); | |
5a52102b NF |
739 | } |
740 | ||
741 | struct extended_stats_options_t { | |
742 | char *name; | |
743 | int id; | |
744 | int sub_type; | |
745 | }; | |
746 | ||
747 | /* Note: if one xstat name is subset of another, it should be before it in this | |
748 | * list. | |
749 | * Name length must be under 64 chars. | |
750 | */ | |
751 | static const struct extended_stats_options_t extended_stats_options[] = { | |
1c2df613 | 752 | {"cpu_hits", IFLA_STATS_LINK_OFFLOAD_XSTATS, IFLA_OFFLOAD_XSTATS_CPU_HIT}, |
5a52102b NF |
753 | }; |
754 | ||
755 | static const char *get_filter_type(const char *name) | |
756 | { | |
757 | int name_len; | |
758 | int i; | |
759 | ||
760 | name_len = strlen(name); | |
761 | for (i = 0; i < ARRAY_SIZE(extended_stats_options); i++) { | |
762 | const struct extended_stats_options_t *xstat; | |
763 | ||
764 | xstat = &extended_stats_options[i]; | |
765 | if (strncmp(name, xstat->name, name_len) == 0) { | |
766 | filter_type = xstat->id; | |
767 | sub_type = xstat->sub_type; | |
768 | return xstat->name; | |
769 | } | |
770 | } | |
771 | ||
772 | fprintf(stderr, "invalid ifstat extension %s\n", name); | |
773 | xstat_usage(); | |
774 | return NULL; | |
775 | } | |
776 | ||
d7e0809e SH |
777 | static void usage(void) __attribute__((noreturn)); |
778 | ||
aba5acdf SH |
779 | static void usage(void) |
780 | { | |
d7e0809e SH |
781 | fprintf(stderr, |
782 | "Usage: ifstat [OPTION] [ PATTERN [ PATTERN ] ]\n" | |
eca7a742 MF |
783 | " -h, --help this message\n" |
784 | " -a, --ignore ignore history\n" | |
785 | " -d, --scan=SECS sample every statistics every SECS\n" | |
786 | " -e, --errors show errors\n" | |
787 | " -j, --json format output in JSON\n" | |
788 | " -n, --nooutput do history only\n" | |
789 | " -p, --pretty pretty print\n" | |
790 | " -r, --reset reset history\n" | |
791 | " -s, --noupdate don't update history\n" | |
792 | " -t, --interval=SECS report average over the last SECS\n" | |
793 | " -V, --version output version information\n" | |
5a52102b NF |
794 | " -z, --zeros show entries with zero activity\n" |
795 | " -x, --extended=TYPE show extended stats of TYPE\n"); | |
d7e0809e SH |
796 | |
797 | exit(-1); | |
aba5acdf SH |
798 | } |
799 | ||
9f3ea250 SH |
800 | static const struct option longopts[] = { |
801 | { "help", 0, 0, 'h' }, | |
802 | { "ignore", 0, 0, 'a' }, | |
803 | { "scan", 1, 0, 'd'}, | |
804 | { "errors", 0, 0, 'e' }, | |
805 | { "nooutput", 0, 0, 'n' }, | |
ec3e625c | 806 | { "json", 0, 0, 'j' }, |
9f3ea250 | 807 | { "reset", 0, 0, 'r' }, |
fcc16c22 | 808 | { "pretty", 0, 0, 'p' }, |
9f3ea250 SH |
809 | { "noupdate", 0, 0, 's' }, |
810 | { "interval", 1, 0, 't' }, | |
811 | { "version", 0, 0, 'V' }, | |
812 | { "zeros", 0, 0, 'z' }, | |
5a52102b | 813 | { "extended", 1, 0, 'x'}, |
9f3ea250 SH |
814 | { 0 } |
815 | }; | |
aba5acdf SH |
816 | |
817 | int main(int argc, char *argv[]) | |
818 | { | |
819 | char hist_name[128]; | |
820 | struct sockaddr_un sun; | |
821 | FILE *hist_fp = NULL; | |
5a52102b | 822 | const char *stats_type = NULL; |
aba5acdf SH |
823 | int ch; |
824 | int fd; | |
825 | ||
5a52102b NF |
826 | is_extended = false; |
827 | while ((ch = getopt_long(argc, argv, "hjpvVzrnasd:t:ex:", | |
9f3ea250 | 828 | longopts, NULL)) != EOF) { |
acd1e437 | 829 | switch (ch) { |
aba5acdf SH |
830 | case 'z': |
831 | dump_zeros = 1; | |
832 | break; | |
833 | case 'r': | |
834 | reset_history = 1; | |
835 | break; | |
836 | case 'a': | |
837 | ignore_history = 1; | |
838 | break; | |
839 | case 's': | |
840 | no_update = 1; | |
841 | break; | |
842 | case 'n': | |
843 | no_output = 1; | |
844 | break; | |
845 | case 'e': | |
846 | show_errors = 1; | |
847 | break; | |
ec3e625c SH |
848 | case 'j': |
849 | json_output = 1; | |
850 | break; | |
fcc16c22 SH |
851 | case 'p': |
852 | pretty = 1; | |
853 | break; | |
aba5acdf | 854 | case 'd': |
9f3ea250 SH |
855 | scan_interval = atoi(optarg) * 1000; |
856 | if (scan_interval <= 0) { | |
857 | fprintf(stderr, "ifstat: invalid scan interval\n"); | |
858 | exit(-1); | |
859 | } | |
aba5acdf SH |
860 | break; |
861 | case 't': | |
9f3ea250 SH |
862 | time_constant = atoi(optarg); |
863 | if (time_constant <= 0) { | |
aba5acdf SH |
864 | fprintf(stderr, "ifstat: invalid time constant divisor\n"); |
865 | exit(-1); | |
866 | } | |
867 | break; | |
5a52102b NF |
868 | case 'x': |
869 | stats_type = optarg; | |
870 | is_extended = true; | |
871 | break; | |
aba5acdf SH |
872 | case 'v': |
873 | case 'V': | |
874 | printf("ifstat utility, iproute2-ss%s\n", SNAPSHOT); | |
875 | exit(0); | |
876 | case 'h': | |
877 | case '?': | |
878 | default: | |
879 | usage(); | |
880 | } | |
881 | } | |
882 | ||
883 | argc -= optind; | |
884 | argv += optind; | |
885 | ||
5a52102b NF |
886 | if (stats_type) { |
887 | stats_type = get_filter_type(stats_type); | |
888 | if (!stats_type) | |
889 | exit(-1); | |
890 | } | |
891 | ||
aba5acdf SH |
892 | sun.sun_family = AF_UNIX; |
893 | sun.sun_path[0] = 0; | |
894 | sprintf(sun.sun_path+1, "ifstat%d", getuid()); | |
895 | ||
896 | if (scan_interval > 0) { | |
897 | if (time_constant == 0) | |
898 | time_constant = 60; | |
899 | time_constant *= 1000; | |
900 | W = 1 - 1/exp(log(10)*(double)scan_interval/time_constant); | |
901 | if ((fd = socket(AF_UNIX, SOCK_STREAM, 0)) < 0) { | |
902 | perror("ifstat: socket"); | |
903 | exit(-1); | |
904 | } | |
acd1e437 | 905 | if (bind(fd, (struct sockaddr *)&sun, 2+1+strlen(sun.sun_path+1)) < 0) { |
aba5acdf SH |
906 | perror("ifstat: bind"); |
907 | exit(-1); | |
908 | } | |
909 | if (listen(fd, 5) < 0) { | |
910 | perror("ifstat: listen"); | |
911 | exit(-1); | |
912 | } | |
a7a9ddbb MF |
913 | if (daemon(0, 0)) { |
914 | perror("ifstat: daemon"); | |
915 | exit(-1); | |
916 | } | |
aba5acdf SH |
917 | signal(SIGPIPE, SIG_IGN); |
918 | signal(SIGCHLD, sigchild); | |
919 | server_loop(fd); | |
920 | exit(0); | |
921 | } | |
922 | ||
923 | patterns = argv; | |
924 | npatterns = argc; | |
925 | ||
926 | if (getenv("IFSTAT_HISTORY")) | |
daf7bd5c SH |
927 | snprintf(hist_name, sizeof(hist_name), |
928 | "%s", getenv("IFSTAT_HISTORY")); | |
aba5acdf | 929 | else |
5a52102b NF |
930 | if (!stats_type) |
931 | snprintf(hist_name, sizeof(hist_name), | |
932 | "%s/.ifstat.u%d", P_tmpdir, getuid()); | |
933 | else | |
934 | snprintf(hist_name, sizeof(hist_name), | |
935 | "%s/.%s_ifstat.u%d", P_tmpdir, stats_type, | |
936 | getuid()); | |
aba5acdf SH |
937 | |
938 | if (reset_history) | |
939 | unlink(hist_name); | |
940 | ||
941 | if (!ignore_history || !no_update) { | |
942 | struct stat stb; | |
943 | ||
944 | fd = open(hist_name, O_RDWR|O_CREAT|O_NOFOLLOW, 0600); | |
945 | if (fd < 0) { | |
946 | perror("ifstat: open history file"); | |
947 | exit(-1); | |
948 | } | |
949 | if ((hist_fp = fdopen(fd, "r+")) == NULL) { | |
950 | perror("ifstat: fdopen history file"); | |
951 | exit(-1); | |
952 | } | |
953 | if (flock(fileno(hist_fp), LOCK_EX)) { | |
954 | perror("ifstat: flock history file"); | |
955 | exit(-1); | |
956 | } | |
957 | if (fstat(fileno(hist_fp), &stb) != 0) { | |
958 | perror("ifstat: fstat history file"); | |
959 | exit(-1); | |
960 | } | |
961 | if (stb.st_nlink != 1 || stb.st_uid != getuid()) { | |
962 | fprintf(stderr, "ifstat: something is so wrong with history file, that I prefer not to proceed.\n"); | |
963 | exit(-1); | |
964 | } | |
965 | if (!ignore_history) { | |
966 | FILE *tfp; | |
9a230771 | 967 | long uptime = -1; |
acd1e437 | 968 | |
aba5acdf SH |
969 | if ((tfp = fopen("/proc/uptime", "r")) != NULL) { |
970 | if (fscanf(tfp, "%ld", &uptime) != 1) | |
971 | uptime = -1; | |
972 | fclose(tfp); | |
973 | } | |
974 | if (uptime >= 0 && time(NULL) >= stb.st_mtime+uptime) { | |
975 | fprintf(stderr, "ifstat: history is aged out, resetting\n"); | |
d572ed4d PS |
976 | if (ftruncate(fileno(hist_fp), 0)) |
977 | perror("ifstat: ftruncate"); | |
aba5acdf SH |
978 | } |
979 | } | |
980 | ||
981 | load_raw_table(hist_fp); | |
982 | ||
983 | hist_db = kern_db; | |
984 | kern_db = NULL; | |
985 | } | |
986 | ||
987 | if ((fd = socket(AF_UNIX, SOCK_STREAM, 0)) >= 0 && | |
acd1e437 | 988 | (connect(fd, (struct sockaddr *)&sun, 2+1+strlen(sun.sun_path+1)) == 0 |
aba5acdf | 989 | || (strcpy(sun.sun_path+1, "ifstat0"), |
acd1e437 | 990 | connect(fd, (struct sockaddr *)&sun, 2+1+strlen(sun.sun_path+1)) == 0)) |
aba5acdf SH |
991 | && verify_forging(fd) == 0) { |
992 | FILE *sfp = fdopen(fd, "r"); | |
acd1e437 | 993 | |
6d02518f PS |
994 | if (!sfp) { |
995 | fprintf(stderr, "ifstat: fdopen failed: %s\n", | |
996 | strerror(errno)); | |
997 | close(fd); | |
998 | } else { | |
999 | load_raw_table(sfp); | |
1000 | if (hist_db && source_mismatch) { | |
1001 | fprintf(stderr, "ifstat: history is stale, ignoring it.\n"); | |
1002 | hist_db = NULL; | |
1003 | } | |
1004 | fclose(sfp); | |
aba5acdf | 1005 | } |
aba5acdf SH |
1006 | } else { |
1007 | if (fd >= 0) | |
1008 | close(fd); | |
1009 | if (hist_db && info_source[0] && strcmp(info_source, "kernel")) { | |
1010 | fprintf(stderr, "ifstat: history is stale, ignoring it.\n"); | |
1011 | hist_db = NULL; | |
1012 | info_source[0] = 0; | |
1013 | } | |
1014 | load_info(); | |
1015 | if (info_source[0] == 0) | |
1016 | strcpy(info_source, "kernel"); | |
1017 | } | |
1018 | ||
1019 | if (!no_output) { | |
1020 | if (ignore_history || hist_db == NULL) | |
1021 | dump_kern_db(stdout); | |
1022 | else | |
1023 | dump_incr_db(stdout); | |
1024 | } | |
ec3e625c | 1025 | |
aba5acdf | 1026 | if (!no_update) { |
d572ed4d PS |
1027 | if (ftruncate(fileno(hist_fp), 0)) |
1028 | perror("ifstat: ftruncate"); | |
aba5acdf | 1029 | rewind(hist_fp); |
ec3e625c SH |
1030 | |
1031 | json_output = 0; | |
aba5acdf | 1032 | dump_raw_db(hist_fp, 1); |
ec3e625c | 1033 | fclose(hist_fp); |
aba5acdf SH |
1034 | } |
1035 | exit(0); | |
1036 | } |