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root/i-scream/projects/libstatgrab/src/libstatgrab/network_stats.c
Revision: 1.47
Committed: Sat Mar 6 21:49:13 2004 UTC (20 years, 2 months ago) by tdb
Content type: text/plain
Branch: MAIN
Changes since 1.46: +16 -1 lines
Log Message:
Make the rest of the code aware of the new values in the struct.

File Contents

# Content
1 /*
2 * i-scream central monitoring system
3 * http://www.i-scream.org
4 * Copyright (C) 2000-2004 i-scream
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
19 * 02111-1307 USA
20 *
21 * $Id: network_stats.c,v 1.46 2004/03/06 19:04:29 tdb Exp $
22 */
23
24 #ifdef HAVE_CONFIG_H
25 #include "config.h"
26 #endif
27
28 #include <stdlib.h>
29 #include <string.h>
30 #include "statgrab.h"
31 #include <time.h>
32 #ifdef SOLARIS
33 #include <kstat.h>
34 #include <sys/sysinfo.h>
35 #include <sys/types.h>
36 #include <sys/socket.h>
37 #include <sys/ioctl.h>
38 #include <net/if.h>
39 #include <netinet/in.h>
40 #include <sys/sockio.h>
41 #endif
42 #ifdef LINUX
43 #include <stdio.h>
44 #include <sys/types.h>
45 #include <regex.h>
46 #include <sys/ioctl.h>
47 #include <sys/socket.h>
48 #include <net/if.h>
49 #include <ctype.h>
50 #include "tools.h"
51 /* Stuff which could be defined by defining KERNEL, but
52 * that would be a bad idea, so we'll just declare it here
53 */
54 typedef __uint8_t u8;
55 typedef __uint16_t u16;
56 typedef __uint32_t u32;
57 typedef __uint64_t u64;
58 #include <linux/ethtool.h>
59 #include <linux/sockios.h>
60 #include <unistd.h>
61 #endif
62 #ifdef ALLBSD
63 #include <sys/types.h>
64 #include <sys/socket.h>
65 #include <ifaddrs.h>
66 #include <net/if.h>
67 #include <net/if_media.h>
68 #include <sys/ioctl.h>
69 #endif
70
71 static network_stat_t *network_stats=NULL;
72 static int interfaces=0;
73
74 void network_stat_init(int start, int end, network_stat_t *net_stats){
75
76 for(net_stats+=start; start<end; start++){
77 net_stats->interface_name=NULL;
78 net_stats->tx=0;
79 net_stats->rx=0;
80 net_stats->ipackets=0;
81 net_stats->opackets=0;
82 net_stats->ierrors=0;
83 net_stats->oerrors=0;
84 net_stats->collisions=0;
85 net_stats++;
86 }
87 }
88
89 network_stat_t *network_stat_malloc(int needed_entries, int *cur_entries, network_stat_t *net_stats){
90
91 if(net_stats==NULL){
92
93 if((net_stats=malloc(needed_entries * sizeof(network_stat_t)))==NULL){
94 return NULL;
95 }
96 network_stat_init(0, needed_entries, net_stats);
97 *cur_entries=needed_entries;
98
99 return net_stats;
100 }
101
102
103 if(*cur_entries<needed_entries){
104 net_stats=realloc(net_stats, (sizeof(network_stat_t)*needed_entries));
105 if(net_stats==NULL){
106 return NULL;
107 }
108 network_stat_init(*cur_entries, needed_entries, net_stats);
109 *cur_entries=needed_entries;
110 }
111
112 return net_stats;
113 }
114
115
116 network_stat_t *get_network_stats(int *entries){
117
118 static int sizeof_network_stats=0;
119 network_stat_t *network_stat_ptr;
120
121 #ifdef SOLARIS
122 kstat_ctl_t *kc;
123 kstat_t *ksp;
124 kstat_named_t *knp;
125 #endif
126
127 #ifdef LINUX
128 FILE *f;
129 /* Horrible big enough, but it should be easily big enough */
130 char line[8096];
131 regex_t regex;
132 regmatch_t line_match[4];
133 #endif
134 #ifdef ALLBSD
135 struct ifaddrs *net, *net_ptr;
136 struct if_data *net_data;
137 #endif
138
139 #ifdef ALLBSD
140 if(getifaddrs(&net) != 0){
141 return NULL;
142 }
143
144 interfaces=0;
145
146 for(net_ptr=net;net_ptr!=NULL;net_ptr=net_ptr->ifa_next){
147 if(net_ptr->ifa_addr->sa_family != AF_LINK) continue;
148 network_stats=network_stat_malloc((interfaces+1), &sizeof_network_stats, network_stats);
149 if(network_stats==NULL){
150 return NULL;
151 }
152 network_stat_ptr=network_stats+interfaces;
153
154 if(network_stat_ptr->interface_name!=NULL) free(network_stat_ptr->interface_name);
155 network_stat_ptr->interface_name=strdup(net_ptr->ifa_name);
156 if(network_stat_ptr->interface_name==NULL) return NULL;
157 net_data=(struct if_data *)net_ptr->ifa_data;
158 network_stat_ptr->rx=net_data->ifi_ibytes;
159 network_stat_ptr->tx=net_data->ifi_obytes;
160 network_stat_ptr->ipackets=net_data->ifi_ipackets;
161 network_stat_ptr->opackets=net_data->ifi_opackets;
162 network_stat_ptr->ierrors=net_data->ifi_ierrors;
163 network_stat_ptr->oerrors=net_data->ifi_oerrors;
164 network_stat_ptr->collisions=net_data->ifi_collisions;
165 network_stat_ptr->systime=time(NULL);
166 interfaces++;
167 }
168 freeifaddrs(net);
169 #endif
170
171 #ifdef SOLARIS
172 if ((kc = kstat_open()) == NULL) {
173 return NULL;
174 }
175
176 interfaces=0;
177
178 for (ksp = kc->kc_chain; ksp; ksp = ksp->ks_next) {
179 if (!strcmp(ksp->ks_class, "net")) {
180 kstat_read(kc, ksp, NULL);
181
182 #ifdef SOL7
183 #define RLOOKUP "rbytes"
184 #define WLOOKUP "obytes"
185 #define VALTYPE value.ui32
186 #else
187 #define RLOOKUP "rbytes64"
188 #define WLOOKUP "obytes64"
189 #define VALTYPE value.ui64
190 #endif
191
192 if((knp=kstat_data_lookup(ksp, RLOOKUP))==NULL){
193 /* This is a network interface, but it doesn't
194 * have the rbytes/obytes values; for instance,
195 * the loopback devices have this behaviour
196 * (although they do track packets in/out). */
197 continue;
198 }
199
200 network_stats=network_stat_malloc((interfaces+1), &sizeof_network_stats, network_stats);
201 if(network_stats==NULL){
202 return NULL;
203 }
204 network_stat_ptr=network_stats+interfaces;
205 network_stat_ptr->rx=knp->VALTYPE;
206
207 if((knp=kstat_data_lookup(ksp, WLOOKUP))==NULL){
208 continue;
209 }
210 network_stat_ptr->tx=knp->VALTYPE;
211 if(network_stat_ptr->interface_name!=NULL){
212 free(network_stat_ptr->interface_name);
213 }
214 network_stat_ptr->interface_name=strdup(ksp->ks_name);
215
216 network_stat_ptr->systime=time(NULL);
217 interfaces++;
218 }
219 }
220
221 kstat_close(kc);
222 #endif
223 #ifdef LINUX
224 f=fopen("/proc/net/dev", "r");
225 if(f==NULL){
226 return NULL;
227 }
228 /* read the 2 lines.. Its the title, so we dont care :) */
229 fgets(line, sizeof(line), f);
230 fgets(line, sizeof(line), f);
231
232
233 if((regcomp(&regex, "^[[:space:]]*([^:]+):[[:space:]]*([[:digit:]]+)[[:space:]]+[[:digit:]]+[[:space:]]+[[:digit:]]+[[:space:]]+[[:digit:]]+[[:space:]]+[[:digit:]]+[[:space:]]+[[:digit:]]+[[:space:]]+[[:digit:]]+[[:space:]]+[[:digit:]]+[[:space:]]+([[:digit:]]+)", REG_EXTENDED))!=0){
234 return NULL;
235 }
236
237 interfaces=0;
238
239 while((fgets(line, sizeof(line), f)) != NULL){
240 if((regexec(&regex, line, 4, line_match, 0))!=0){
241 continue;
242 }
243 network_stats=network_stat_malloc((interfaces+1), &sizeof_network_stats, network_stats);
244 if(network_stats==NULL){
245 return NULL;
246 }
247 network_stat_ptr=network_stats+interfaces;
248
249 if(network_stat_ptr->interface_name!=NULL){
250 free(network_stat_ptr->interface_name);
251 }
252
253 network_stat_ptr->interface_name=get_string_match(line, &line_match[1]);
254 network_stat_ptr->rx=get_ll_match(line, &line_match[2]);
255 network_stat_ptr->tx=get_ll_match(line, &line_match[3]);
256 network_stat_ptr->systime=time(NULL);
257
258 interfaces++;
259 }
260 fclose(f);
261 regfree(&regex);
262
263 #endif
264
265 #ifdef CYGWIN
266 return NULL;
267 #endif
268
269 *entries=interfaces;
270
271 return network_stats;
272 }
273
274 long long transfer_diff(long long new, long long old){
275 #if defined(SOL7) || defined(LINUX) || defined(FREEBSD) || defined(DFBSD)
276 #define MAXVAL 4294967296LL
277 #else
278 #define MAXVAL 18446744073709551616LL
279 #endif
280 long long result;
281 if(new>=old){
282 result = (new-old);
283 }else{
284 result = (MAXVAL+(new-old));
285 }
286
287 return result;
288
289 }
290
291 network_stat_t *get_network_stats_diff(int *entries) {
292 static network_stat_t *diff = NULL;
293 static int diff_count = 0;
294 network_stat_t *src, *dest;
295 int i, j, new_count;
296
297 if (network_stats == NULL) {
298 /* No previous stats, so we can't calculate a difference. */
299 return get_network_stats(entries);
300 }
301
302 /* Resize the results array to match the previous stats. */
303 diff = network_stat_malloc(interfaces, &diff_count, diff);
304 if (diff == NULL) {
305 return NULL;
306 }
307
308 /* Copy the previous stats into the result. */
309 for (i = 0; i < diff_count; i++) {
310 src = &network_stats[i];
311 dest = &diff[i];
312
313 if (dest->interface_name != NULL) {
314 free(dest->interface_name);
315 }
316 dest->interface_name = strdup(src->interface_name);
317 dest->rx = src->rx;
318 dest->tx = src->tx;
319 dest->ipackets = src->ipackets;
320 dest->opackets = src->opackets;
321 dest->ierrors = src->ierrors;
322 dest->oerrors = src->oerrors;
323 dest->collisions = src->collisions;
324 dest->systime = src->systime;
325 }
326
327 /* Get a new set of stats. */
328 if (get_network_stats(&new_count) == NULL) {
329 return NULL;
330 }
331
332 /* For each previous stat... */
333 for (i = 0; i < diff_count; i++) {
334 dest = &diff[i];
335
336 /* ... find the corresponding new stat ... */
337 for (j = 0; j < new_count; j++) {
338 /* Try the new stat in the same position first,
339 since that's most likely to be it. */
340 src = &network_stats[(i + j) % new_count];
341 if (strcmp(src->interface_name, dest->interface_name) == 0) {
342 break;
343 }
344 }
345 if (j == new_count) {
346 /* No match found. */
347 continue;
348 }
349
350 /* ... and subtract the previous stat from it to get the
351 difference. */
352 dest->rx = transfer_diff(src->rx, dest->rx);
353 dest->tx = transfer_diff(src->tx, dest->tx);
354 dest->ipackets = transfer_diff(src->ipackets, dest->ipackets);
355 dest->opackets = transfer_diff(src->opackets, dest->opackets);
356 dest->ierrors = transfer_diff(src->ierrors, dest->ierrors);
357 dest->oerrors = transfer_diff(src->oerrors, dest->oerrors);
358 dest->collisions = transfer_diff(src->collisions, dest->collisions);
359 dest->systime = src->systime - dest->systime;
360 }
361
362 *entries = diff_count;
363 return diff;
364 }
365 /* NETWORK INTERFACE STATS */
366
367 void network_iface_stat_init(int start, int end, network_iface_stat_t *net_stats){
368
369 for(net_stats+=start; start<end; start++){
370 net_stats->interface_name=NULL;
371 net_stats->speed=0;
372 net_stats->dup=UNKNOWN_DUPLEX;
373 net_stats++;
374 }
375 }
376
377 network_iface_stat_t *network_iface_stat_malloc(int needed_entries, int *cur_entries, network_iface_stat_t *net_stats){
378
379 if(net_stats==NULL){
380
381 if((net_stats=malloc(needed_entries * sizeof(network_iface_stat_t)))==NULL){
382 return NULL;
383 }
384 network_iface_stat_init(0, needed_entries, net_stats);
385 *cur_entries=needed_entries;
386
387 return net_stats;
388 }
389
390
391 if(*cur_entries<needed_entries){
392 net_stats=realloc(net_stats, (sizeof(network_iface_stat_t)*needed_entries));
393 if(net_stats==NULL){
394 return NULL;
395 }
396 network_iface_stat_init(*cur_entries, needed_entries, net_stats);
397 *cur_entries=needed_entries;
398 }
399
400 return net_stats;
401 }
402
403 network_iface_stat_t *get_network_iface_stats(int *entries){
404 static network_iface_stat_t *network_iface_stats;
405 network_iface_stat_t *network_iface_stat_ptr;
406 static int sizeof_network_iface_stats=0;
407 int ifaces = 0;
408
409 #ifdef SOLARIS
410 kstat_ctl_t *kc;
411 kstat_t *ksp;
412 kstat_named_t *knp;
413 int sock;
414 #endif
415 #ifdef ALLBSD
416 struct ifaddrs *net, *net_ptr;
417 struct ifmediareq ifmed;
418 struct ifreq ifr;
419 int sock;
420 int x;
421 #endif
422 #ifdef LINUX
423 FILE *f;
424 /* Horrible big enough, but it should be easily big enough */
425 char line[8096];
426 int sock;
427 #endif
428
429 #ifdef ALLBSD
430 if(getifaddrs(&net) != 0){
431 return NULL;
432 }
433
434 if ((sock = socket(AF_INET, SOCK_DGRAM, 0)) == 0) return NULL;
435
436 for(net_ptr=net; net_ptr!=NULL; net_ptr=net_ptr->ifa_next){
437 if(net_ptr->ifa_addr->sa_family != AF_LINK) continue;
438 network_iface_stats=network_iface_stat_malloc((ifaces+1), &sizeof_network_iface_stats, network_iface_stats);
439 if(network_iface_stats==NULL){
440 return NULL;
441 }
442 network_iface_stat_ptr = network_iface_stats + ifaces;
443
444 memset(&ifr, 0, sizeof(ifr));
445 strncpy(ifr.ifr_name, net_ptr->ifa_name, sizeof(ifr.ifr_name));
446
447 if (ioctl(sock, SIOCGIFFLAGS, &ifr) < 0){
448 continue;
449 }
450 if((ifr.ifr_flags & IFF_UP) != 0){
451 network_iface_stat_ptr->up = 1;
452 }else{
453 network_iface_stat_ptr->up = 0;
454 }
455
456 if (network_iface_stat_ptr->interface_name != NULL) free(network_iface_stat_ptr->interface_name);
457 network_iface_stat_ptr->interface_name = strdup(net_ptr->ifa_name);
458 if (network_iface_stat_ptr->interface_name == NULL) return NULL;
459
460 network_iface_stat_ptr->speed = 0;
461 network_iface_stat_ptr->dup = UNKNOWN_DUPLEX;
462 ifaces++;
463
464 memset(&ifmed, 0, sizeof(struct ifmediareq));
465 strlcpy(ifmed.ifm_name, net_ptr->ifa_name, sizeof(ifmed.ifm_name));
466 if(ioctl(sock, SIOCGIFMEDIA, (caddr_t)&ifmed) == -1){
467 /* Not all interfaces support the media ioctls. */
468 continue;
469 }
470
471 /* We may need to change this if we start doing wireless devices too */
472 if( (ifmed.ifm_active | IFM_ETHER) != ifmed.ifm_active ){
473 /* Not a ETHER device */
474 continue;
475 }
476
477 /* Only intrested in the first 4 bits) - Assuming only ETHER devices */
478 x = ifmed.ifm_active & 0x0f;
479 switch(x){
480 /* 10 Mbit connections. Speedy :) */
481 case(IFM_10_T):
482 case(IFM_10_2):
483 case(IFM_10_5):
484 case(IFM_10_STP):
485 case(IFM_10_FL):
486 network_iface_stat_ptr->speed = 10;
487 break;
488 /* 100 Mbit conneections */
489 case(IFM_100_TX):
490 case(IFM_100_FX):
491 case(IFM_100_T4):
492 case(IFM_100_VG):
493 case(IFM_100_T2):
494 network_iface_stat_ptr->speed = 100;
495 break;
496 /* 1000 Mbit connections */
497 case(IFM_1000_SX):
498 case(IFM_1000_LX):
499 case(IFM_1000_CX):
500 #ifdef IFM_1000_TX
501 case(IFM_1000_TX): /* FreeBSD 4 and others? */
502 #endif
503 #ifdef IFM_1000_FX
504 case(IFM_1000_FX): /* FreeBSD 4 */
505 #endif
506 #ifdef IFM_1000_T
507 case(IFM_1000_T): /* FreeBSD 5 */
508 #endif
509 network_iface_stat_ptr->speed = 1000;
510 break;
511 /* We don't know what it is */
512 default:
513 network_iface_stat_ptr->speed = 0;
514 break;
515 }
516
517 if( (ifmed.ifm_active | IFM_FDX) == ifmed.ifm_active ){
518 network_iface_stat_ptr->dup = FULL_DUPLEX;
519 }else if( (ifmed.ifm_active | IFM_HDX) == ifmed.ifm_active ){
520 network_iface_stat_ptr->dup = HALF_DUPLEX;
521 }else{
522 network_iface_stat_ptr->dup = UNKNOWN_DUPLEX;
523 }
524
525 }
526 freeifaddrs(net);
527 close(sock);
528 #endif
529
530 #ifdef SOLARIS
531 if ((kc = kstat_open()) == NULL) {
532 return NULL;
533 }
534
535 if ((sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_IP)) < 0) {
536 return NULL;
537 }
538
539 for (ksp = kc->kc_chain; ksp; ksp = ksp->ks_next) {
540 if (!strcmp(ksp->ks_class, "net")) {
541 struct ifreq ifr;
542
543 kstat_read(kc, ksp, NULL);
544
545 strncpy(ifr.ifr_name, ksp->ks_name, sizeof ifr.ifr_name);
546 if (ioctl(sock, SIOCGIFFLAGS, &ifr) < 0) {
547 /* Not a network interface. */
548 continue;
549 }
550
551 network_iface_stats = network_iface_stat_malloc(ifaces + 1, &sizeof_network_iface_stats, network_iface_stats);
552 if (network_iface_stats == NULL) {
553 return NULL;
554 }
555 network_iface_stat_ptr = network_iface_stats + ifaces;
556 ifaces++;
557
558 if (network_iface_stat_ptr->interface_name != NULL) free(network_iface_stat_ptr->interface_name);
559 network_iface_stat_ptr->interface_name = strdup(ksp->ks_name);
560 if (network_iface_stat_ptr->interface_name == NULL) return NULL;
561
562 if ((ifr.ifr_flags & IFF_UP) != 0) {
563 network_iface_stat_ptr->up = 1;
564 } else {
565 network_iface_stat_ptr->up = 1;
566 }
567
568 if ((knp = kstat_data_lookup(ksp, "ifspeed")) != NULL) {
569 network_iface_stat_ptr->speed = knp->value.ui64 / (1000 * 1000);
570 } else {
571 network_iface_stat_ptr->speed = 0;
572 }
573
574 network_iface_stat_ptr->dup = UNKNOWN_DUPLEX;
575 if ((knp = kstat_data_lookup(ksp, "link_duplex")) != NULL) {
576 switch (knp->value.ui32) {
577 case 1:
578 network_iface_stat_ptr->dup = HALF_DUPLEX;
579 break;
580 case 2:
581 network_iface_stat_ptr->dup = FULL_DUPLEX;
582 break;
583 }
584 }
585 }
586 }
587
588 close(sock);
589 kstat_close(kc);
590 #endif
591 #ifdef LINUX
592 f = fopen("/proc/net/dev", "r");
593 if(f == NULL){
594 return NULL;
595 }
596
597 /* Setup stuff so we can do the ioctl to get the info */
598 if((sock = socket(AF_INET, SOCK_DGRAM, 0)) < 0){
599 return NULL;
600 }
601
602 /* Ignore first 2 lines.. Just headings */
603 if((fgets(line, sizeof(line), f)) == NULL) return NULL;
604 if((fgets(line, sizeof(line), f)) == NULL) return NULL;
605
606 while((fgets(line, sizeof(line), f)) != NULL){
607 char *name, *ptr;
608 struct ifreq ifr;
609 struct ethtool_cmd ethcmd;
610 int err;
611
612 /* Get the interface name */
613 ptr = strchr(line, ':');
614 if (ptr == NULL) continue;
615 *ptr='\0';
616 name = line;
617 while(isspace(*(name))){
618 name++;
619 }
620
621 memset(&ifr, 0, sizeof ifr);
622 strncpy(ifr.ifr_name, name, sizeof ifr.ifr_name);
623
624 if (ioctl(sock, SIOCGIFFLAGS, &ifr) < 0) {
625 continue;
626 }
627
628 /* We have a good interface to add */
629 network_iface_stats=network_iface_stat_malloc((ifaces+1), &sizeof_network_iface_stats, network_iface_stats);
630 if(network_iface_stats==NULL){
631 return NULL;
632 }
633 network_iface_stat_ptr = network_iface_stats + ifaces;
634 network_iface_stat_ptr->interface_name = strdup(name);
635 if ((ifr.ifr_flags & IFF_UP) != 0) {
636 network_iface_stat_ptr->up = 1;
637 } else {
638 network_iface_stat_ptr->up = 0;
639 }
640
641 memset(&ethcmd, 0, sizeof ethcmd);
642 ethcmd.cmd = ETHTOOL_GSET;
643 ifr.ifr_data = (caddr_t) &ethcmd;
644
645 err = ioctl(sock, SIOCETHTOOL, &ifr);
646 if (err == 0) {
647 network_iface_stat_ptr->speed = ethcmd.speed;
648
649 switch (ethcmd.duplex) {
650 case 0x00:
651 network_iface_stat_ptr->dup = FULL_DUPLEX;
652 break;
653 case 0x01:
654 network_iface_stat_ptr->dup = HALF_DUPLEX;
655 break;
656 default:
657 network_iface_stat_ptr->dup = UNKNOWN_DUPLEX;
658 }
659 } else {
660 /* Not all interfaces support the ethtool ioctl. */
661 network_iface_stat_ptr->speed = 0;
662 network_iface_stat_ptr->dup = UNKNOWN_DUPLEX;
663 }
664
665 ifaces++;
666 }
667 close(sock);
668 fclose(f);
669 #endif
670 *entries = ifaces;
671 return network_iface_stats;
672 }
673