+++ /dev/null
-/*
- * ifstat.c handy utility to read net interface statistics
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- *
- * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <string.h>
-#include <errno.h>
-#include <time.h>
-#include <sys/time.h>
-#include <fnmatch.h>
-#include <sys/file.h>
-#include <sys/socket.h>
-#include <sys/un.h>
-#include <sys/poll.h>
-#include <sys/wait.h>
-#include <sys/stat.h>
-#include <signal.h>
-#include <math.h>
-#include <getopt.h>
-
-#include <libnetlink.h>
-#include <linux/netdevice.h>
-
-#include <SNAPSHOT.h>
-
-int dump_zeros = 0;
-int reset_history = 0;
-int ignore_history = 0;
-int no_output = 0;
-int no_update = 0;
-int scan_interval = 0;
-int time_constant = 0;
-int show_errors = 0;
-double W;
-char **patterns;
-int npatterns;
-
-char info_source[128];
-int source_mismatch;
-
-#define MAXS (sizeof(struct net_device_stats)/sizeof(unsigned long))
-
-struct ifstat_ent
-{
- struct ifstat_ent *next;
- char *name;
- int ifindex;
- unsigned long long val[MAXS];
- double rate[MAXS];
- unsigned long ival[MAXS];
-};
-
-struct ifstat_ent *kern_db;
-struct ifstat_ent *hist_db;
-
-static int match(const char *id)
-{
- int i;
-
- if (npatterns == 0)
- return 1;
-
- for (i=0; i<npatterns; i++) {
- if (!fnmatch(patterns[i], id, 0))
- return 1;
- }
- return 0;
-}
-
-static int get_nlmsg(const struct sockaddr_nl *who,
- struct nlmsghdr *m, void *arg)
-{
- struct ifinfomsg *ifi = NLMSG_DATA(m);
- struct rtattr * tb[IFLA_MAX+1];
- int len = m->nlmsg_len;
- struct ifstat_ent *n;
- int i;
-
- if (m->nlmsg_type != RTM_NEWLINK)
- return 0;
-
- len -= NLMSG_LENGTH(sizeof(*ifi));
- if (len < 0)
- return -1;
-
- if (!(ifi->ifi_flags&IFF_UP))
- return 0;
-
- parse_rtattr(tb, IFLA_MAX, IFLA_RTA(ifi), len);
- if (tb[IFLA_IFNAME] == NULL || tb[IFLA_STATS] == NULL)
- return 0;
-
- n = malloc(sizeof(*n));
- if (!n)
- abort();
- n->ifindex = ifi->ifi_index;
- n->name = strdup(RTA_DATA(tb[IFLA_IFNAME]));
- memcpy(&n->ival, RTA_DATA(tb[IFLA_STATS]), sizeof(n->ival));
- memset(&n->rate, 0, sizeof(n->rate));
- for (i=0; i<MAXS; i++)
- n->val[i] = n->ival[i];
- n->next = kern_db;
- kern_db = n;
- return 0;
-}
-
-void load_info(void)
-{
- struct ifstat_ent *db, *n;
- struct rtnl_handle rth;
-
- if (rtnl_open(&rth, 0) < 0)
- exit(1);
-
- if (rtnl_wilddump_request(&rth, AF_INET, RTM_GETLINK) < 0) {
- perror("Cannot send dump request");
- exit(1);
- }
-
- if (rtnl_dump_filter(&rth, get_nlmsg, NULL, NULL, NULL) < 0) {
- fprintf(stderr, "Dump terminated\n");
- exit(1);
- }
-
- rtnl_close(&rth);
-
- db = kern_db;
- kern_db = NULL;
-
- while (db) {
- n = db;
- db = db->next;
- n->next = kern_db;
- kern_db = n;
- }
-}
-
-void load_raw_table(FILE *fp)
-{
- char buf[4096];
- struct ifstat_ent *db = NULL;
- struct ifstat_ent *n;
-
- while (fgets(buf, sizeof(buf), fp) != NULL) {
- char *p;
- char *next;
- int i;
-
- if (buf[0] == '#') {
- buf[strlen(buf)-1] = 0;
- if (info_source[0] && strcmp(info_source, buf+1))
- source_mismatch = 1;
- strncpy(info_source, buf+1, sizeof(info_source)-1);
- continue;
- }
- if ((n = malloc(sizeof(*n))) == NULL)
- abort();
-
- if (!(p = strchr(buf, ' ')))
- abort();
- *p++ = 0;
-
- if (sscanf(buf, "%d", &n->ifindex) != 1)
- abort();
- if (!(next = strchr(p, ' ')))
- abort();
- *next++ = 0;
-
- n->name = strdup(p);
- p = next;
-
- for (i=0; i<MAXS; i++) {
- unsigned rate;
- if (!(next = strchr(p, ' ')))
- abort();
- *next++ = 0;
- if (sscanf(p, "%llu", n->val+i) != 1)
- abort();
- n->ival[i] = (unsigned long)n->val[i];
- p = next;
- if (!(next = strchr(p, ' ')))
- abort();
- *next++ = 0;
- if (sscanf(p, "%u", &rate) != 1)
- abort();
- n->rate[i] = rate;
- p = next;
- }
- n->next = db;
- db = n;
- }
-
- while (db) {
- n = db;
- db = db->next;
- n->next = kern_db;
- kern_db = n;
- }
-}
-
-void dump_raw_db(FILE *fp, int to_hist)
-{
- struct ifstat_ent *n, *h;
- h = hist_db;
- fprintf(fp, "#%s\n", info_source);
-
- for (n=kern_db; n; n=n->next) {
- int i;
- unsigned long long *vals = n->val;
- double *rates = n->rate;
- if (!match(n->name)) {
- struct ifstat_ent *h1;
- if (!to_hist)
- continue;
- for (h1 = h; h1; h1 = h1->next) {
- if (h1->ifindex == n->ifindex) {
- vals = h1->val;
- rates = h1->rate;
- h = h1->next;
- break;
- }
- }
- }
- fprintf(fp, "%d %s ", n->ifindex, n->name);
- for (i=0; i<MAXS; i++)
- fprintf(fp, "%llu %u ", vals[i], (unsigned)rates[i]);
- fprintf(fp, "\n");
- }
-}
-
-/* use communication definitions of meg/kilo etc */
-static const unsigned long long giga = 1000000000ull;
-static const unsigned long long mega = 1000000;
-static const unsigned long long kilo = 1000;
-
-void format_rate(FILE *fp, unsigned long long *vals, double *rates, int i)
-{
- char temp[64];
- if (vals[i] > giga)
- fprintf(fp, "%7lluM ", vals[i]/mega);
- else if (vals[i] > mega)
- fprintf(fp, "%7lluK ", vals[i]/kilo);
- else
- fprintf(fp, "%8llu ", vals[i]);
-
- if (rates[i] > mega) {
- sprintf(temp, "%uM", (unsigned)(rates[i]/mega));
- fprintf(fp, "%-6s ", temp);
- } else if (rates[i] > kilo) {
- sprintf(temp, "%uK", (unsigned)(rates[i]/kilo));
- fprintf(fp, "%-6s ", temp);
- } else
- fprintf(fp, "%-6u ", (unsigned)rates[i]);
-}
-
-void format_pair(FILE *fp, unsigned long long *vals, int i, int k)
-{
- char temp[64];
- if (vals[i] > giga)
- fprintf(fp, "%7lluM ", vals[i]/mega);
- else if (vals[i] > mega)
- fprintf(fp, "%7lluK ", vals[i]/kilo);
- else
- fprintf(fp, "%8llu ", vals[i]);
-
- if (vals[k] > giga) {
- sprintf(temp, "%uM", (unsigned)(vals[k]/mega));
- fprintf(fp, "%-6s ", temp);
- } else if (vals[k] > mega) {
- sprintf(temp, "%uK", (unsigned)(vals[k]/kilo));
- fprintf(fp, "%-6s ", temp);
- } else
- fprintf(fp, "%-6u ", (unsigned)vals[k]);
-}
-
-void print_head(FILE *fp)
-{
- fprintf(fp, "#%s\n", info_source);
- fprintf(fp, "%-15s ", "Interface");
-
- fprintf(fp, "%8s/%-6s ", "RX Pkts", "Rate");
- fprintf(fp, "%8s/%-6s ", "TX Pkts", "Rate");
- fprintf(fp, "%8s/%-6s ", "RX Data", "Rate");
- fprintf(fp, "%8s/%-6s\n","TX Data", "Rate");
-
- if (!show_errors) {
- fprintf(fp, "%-15s ", "");
- fprintf(fp, "%8s/%-6s ", "RX Errs", "Drop");
- fprintf(fp, "%8s/%-6s ", "TX Errs", "Drop");
- fprintf(fp, "%8s/%-6s ", "RX Over", "Rate");
- fprintf(fp, "%8s/%-6s\n","TX Coll", "Rate");
- } else {
- fprintf(fp, "%-15s ", "");
- fprintf(fp, "%8s/%-6s ", "RX Errs", "Rate");
- fprintf(fp, "%8s/%-6s ", "RX Drop", "Rate");
- fprintf(fp, "%8s/%-6s ", "RX Over", "Rate");
- fprintf(fp, "%8s/%-6s\n","RX Leng", "Rate");
-
- fprintf(fp, "%-15s ", "");
- fprintf(fp, "%8s/%-6s ", "RX Crc", "Rate");
- fprintf(fp, "%8s/%-6s ", "RX Frm", "Rate");
- fprintf(fp, "%8s/%-6s ", "RX Fifo", "Rate");
- fprintf(fp, "%8s/%-6s\n","RX Miss", "Rate");
-
- fprintf(fp, "%-15s ", "");
- fprintf(fp, "%8s/%-6s ", "TX Errs", "Rate");
- fprintf(fp, "%8s/%-6s ", "TX Drop", "Rate");
- fprintf(fp, "%8s/%-6s ", "TX Coll", "Rate");
- fprintf(fp, "%8s/%-6s\n","TX Carr", "Rate");
-
- fprintf(fp, "%-15s ", "");
- fprintf(fp, "%8s/%-6s ", "TX Abrt", "Rate");
- fprintf(fp, "%8s/%-6s ", "TX Fifo", "Rate");
- fprintf(fp, "%8s/%-6s ", "TX Hear", "Rate");
- fprintf(fp, "%8s/%-6s\n","TX Wind", "Rate");
- }
-}
-
-void print_one_if(FILE *fp, struct ifstat_ent *n, unsigned long long *vals)
-{
- int i;
- fprintf(fp, "%-15s ", n->name);
- for (i=0; i<4; i++)
- format_rate(fp, vals, n->rate, i);
- fprintf(fp, "\n");
-
- if (!show_errors) {
- fprintf(fp, "%-15s ", "");
- format_pair(fp, vals, 4, 6);
- format_pair(fp, vals, 5, 7);
- format_rate(fp, vals, n->rate, 11);
- format_rate(fp, vals, n->rate, 9);
- fprintf(fp, "\n");
- } else {
- fprintf(fp, "%-15s ", "");
- format_rate(fp, vals, n->rate, 4);
- format_rate(fp, vals, n->rate, 6);
- format_rate(fp, vals, n->rate, 11);
- format_rate(fp, vals, n->rate, 10);
- fprintf(fp, "\n");
-
- fprintf(fp, "%-15s ", "");
- format_rate(fp, vals, n->rate, 12);
- format_rate(fp, vals, n->rate, 13);
- format_rate(fp, vals, n->rate, 14);
- format_rate(fp, vals, n->rate, 15);
- fprintf(fp, "\n");
-
- fprintf(fp, "%-15s ", "");
- format_rate(fp, vals, n->rate, 5);
- format_rate(fp, vals, n->rate, 7);
- format_rate(fp, vals, n->rate, 9);
- format_rate(fp, vals, n->rate, 17);
- fprintf(fp, "\n");
-
- fprintf(fp, "%-15s ", "");
- format_rate(fp, vals, n->rate, 16);
- format_rate(fp, vals, n->rate, 18);
- format_rate(fp, vals, n->rate, 19);
- format_rate(fp, vals, n->rate, 20);
- fprintf(fp, "\n");
- }
-}
-
-
-void dump_kern_db(FILE *fp)
-{
- struct ifstat_ent *n, *h;
- h = hist_db;
-
- print_head(fp);
-
- for (n=kern_db; n; n=n->next) {
- if (!match(n->name))
- continue;
- print_one_if(fp, n, n->val);
- }
-}
-
-
-void dump_incr_db(FILE *fp)
-{
- struct ifstat_ent *n, *h;
- h = hist_db;
-
- print_head(fp);
-
- for (n=kern_db; n; n=n->next) {
- int i;
- unsigned long long vals[MAXS];
- struct ifstat_ent *h1;
-
- memcpy(vals, n->val, sizeof(vals));
-
- for (h1 = h; h1; h1 = h1->next) {
- if (h1->ifindex == n->ifindex) {
- for (i = 0; i < MAXS; i++)
- vals[i] -= h1->val[i];
- h = h1->next;
- break;
- }
- }
- if (!match(n->name))
- continue;
- print_one_if(fp, n, vals);
- }
-}
-
-
-static int children;
-
-void sigchild(int signo)
-{
-}
-
-void update_db(int interval)
-{
- struct ifstat_ent *n, *h;
-
- n = kern_db;
- kern_db = NULL;
-
- load_info();
-
- h = kern_db;
- kern_db = n;
-
- for (n = kern_db; n; n = n->next) {
- struct ifstat_ent *h1;
- for (h1 = h; h1; h1 = h1->next) {
- if (h1->ifindex == n->ifindex) {
- int i;
- for (i = 0; i < MAXS; i++) {
- if ((long)(h1->ival[i] - n->ival[i]) < 0) {
- memset(n->ival, 0, sizeof(n->ival));
- break;
- }
- }
- for (i = 0; i < MAXS; i++) {
- double sample;
- unsigned long incr = h1->ival[i] - n->ival[i];
- n->val[i] += incr;
- n->ival[i] = h1->ival[i];
- sample = (double)(incr*1000)/interval;
- if (interval >= scan_interval) {
- n->rate[i] += W*(sample-n->rate[i]);
- } else if (interval >= 1000) {
- if (interval >= time_constant) {
- n->rate[i] = sample;
- } else {
- double w = W*(double)interval/scan_interval;
- n->rate[i] += w*(sample-n->rate[i]);
- }
- }
- }
-
- while (h != h1) {
- struct ifstat_ent *tmp = h;
- h = h->next;
- free(tmp->name);
- free(tmp);
- };
- h = h1->next;
- free(h1->name);
- free(h1);
- break;
- }
- }
- }
-}
-
-#define T_DIFF(a,b) (((a).tv_sec-(b).tv_sec)*1000 + ((a).tv_usec-(b).tv_usec)/1000)
-
-
-void server_loop(int fd)
-{
- struct timeval snaptime = { 0 };
- struct pollfd p;
- p.fd = fd;
- p.events = p.revents = POLLIN;
-
- sprintf(info_source, "%d.%lu sampling_interval=%d time_const=%d",
- getpid(), (unsigned long)random(), scan_interval/1000, time_constant/1000);
-
- load_info();
-
- for (;;) {
- int status;
- int tdiff;
- struct timeval now;
-
- gettimeofday(&now, NULL);
- tdiff = T_DIFF(now, snaptime);
- if (tdiff >= scan_interval) {
- update_db(tdiff);
- snaptime = now;
- tdiff = 0;
- }
-
- if (poll(&p, 1, tdiff + scan_interval) > 0
- && (p.revents&POLLIN)) {
- int clnt = accept(fd, NULL, NULL);
- if (clnt >= 0) {
- pid_t pid;
- if (children >= 5) {
- close(clnt);
- } else if ((pid = fork()) != 0) {
- if (pid>0)
- children++;
- close(clnt);
- } else {
- FILE *fp = fdopen(clnt, "w");
- if (fp) {
- if (tdiff > 0)
- update_db(tdiff);
- dump_raw_db(fp, 0);
- }
- exit(0);
- }
- }
- }
- while (children && waitpid(-1, &status, WNOHANG) > 0)
- children--;
- }
-}
-
-int verify_forging(int fd)
-{
- struct ucred cred;
- socklen_t olen = sizeof(cred);
-
- if (getsockopt(fd, SOL_SOCKET, SO_PEERCRED, (void*)&cred, &olen) ||
- olen < sizeof(cred))
- return -1;
- if (cred.uid == getuid() || cred.uid == 0)
- return 0;
- return -1;
-}
-
-static void usage(void) __attribute__((noreturn));
-
-static void usage(void)
-{
- fprintf(stderr,
-"Usage: ifstat [OPTION] [ PATTERN [ PATTERN ] ]\n"
-" -h, --help this message\n"
-" -a, --ignore ignore history\n"
-" -d, --scan=SECS sample every statistics every SECS\n"
-" -e, --errors show errors\n"
-" -n, --nooutput do history only\n"
-" -r, --reset reset history\n"
-" -s, --noupdate don;t update history\n"
-" -t, --interval=SECS report average over the last SECS\n"
-" -V, --version output version information\n"
-" -z, --zeros show entries with zero activity\n"
-" -e, --errors show errors\n"
-" -z, --zeros show entries with zero activity\n");
-
- exit(-1);
-}
-
-static const struct option longopts[] = {
- { "help", 0, 0, 'h' },
- { "ignore", 0, 0, 'a' },
- { "scan", 1, 0, 'd'},
- { "errors", 0, 0, 'e' },
- { "nooutput", 0, 0, 'n' },
- { "reset", 0, 0, 'r' },
- { "noupdate", 0, 0, 's' },
- { "interval", 1, 0, 't' },
- { "version", 0, 0, 'V' },
- { "zeros", 0, 0, 'z' },
- { "errors", 0, 0, 'e' },
- { "zeros", 0, 0, 'z' },
- { 0 }
-};
-
-int main(int argc, char *argv[])
-{
- char hist_name[128];
- struct sockaddr_un sun;
- FILE *hist_fp = NULL;
- int ch;
- int fd;
-
- while ((ch = getopt_long(argc, argv, "hvVzrnasd:t:eK",
- longopts, NULL)) != EOF) {
- switch(ch) {
- case 'z':
- dump_zeros = 1;
- break;
- case 'r':
- reset_history = 1;
- break;
- case 'a':
- ignore_history = 1;
- break;
- case 's':
- no_update = 1;
- break;
- case 'n':
- no_output = 1;
- break;
- case 'e':
- show_errors = 1;
- break;
- case 'd':
- scan_interval = atoi(optarg) * 1000;
- if (scan_interval <= 0) {
- fprintf(stderr, "ifstat: invalid scan interval\n");
- exit(-1);
- }
- break;
- case 't':
- time_constant = atoi(optarg);
- if (time_constant <= 0) {
- fprintf(stderr, "ifstat: invalid time constant divisor\n");
- exit(-1);
- }
- break;
- case 'v':
- case 'V':
- printf("ifstat utility, iproute2-ss%s\n", SNAPSHOT);
- exit(0);
- case 'h':
- case '?':
- default:
- usage();
- }
- }
-
- argc -= optind;
- argv += optind;
-
- sun.sun_family = AF_UNIX;
- sun.sun_path[0] = 0;
- sprintf(sun.sun_path+1, "ifstat%d", getuid());
-
- if (scan_interval > 0) {
- if (time_constant == 0)
- time_constant = 60;
- time_constant *= 1000;
- W = 1 - 1/exp(log(10)*(double)scan_interval/time_constant);
- if ((fd = socket(AF_UNIX, SOCK_STREAM, 0)) < 0) {
- perror("ifstat: socket");
- exit(-1);
- }
- if (bind(fd, (struct sockaddr*)&sun, 2+1+strlen(sun.sun_path+1)) < 0) {
- perror("ifstat: bind");
- exit(-1);
- }
- if (listen(fd, 5) < 0) {
- perror("ifstat: listen");
- exit(-1);
- }
- if (fork())
- exit(0);
- chdir("/");
- close(0); close(1); close(2); setsid();
- signal(SIGPIPE, SIG_IGN);
- signal(SIGCHLD, sigchild);
- server_loop(fd);
- exit(0);
- }
-
- patterns = argv;
- npatterns = argc;
-
- if (getenv("IFSTAT_HISTORY"))
- snprintf(hist_name, sizeof(hist_name), getenv("IFSTAT_HISTORY"));
- else
- sprintf(hist_name, "%s/.ifstat.u%d", P_tmpdir, getuid());
-
- if (reset_history)
- unlink(hist_name);
-
- if (!ignore_history || !no_update) {
- struct stat stb;
-
- fd = open(hist_name, O_RDWR|O_CREAT|O_NOFOLLOW, 0600);
- if (fd < 0) {
- perror("ifstat: open history file");
- exit(-1);
- }
- if ((hist_fp = fdopen(fd, "r+")) == NULL) {
- perror("ifstat: fdopen history file");
- exit(-1);
- }
- if (flock(fileno(hist_fp), LOCK_EX)) {
- perror("ifstat: flock history file");
- exit(-1);
- }
- if (fstat(fileno(hist_fp), &stb) != 0) {
- perror("ifstat: fstat history file");
- exit(-1);
- }
- if (stb.st_nlink != 1 || stb.st_uid != getuid()) {
- fprintf(stderr, "ifstat: something is so wrong with history file, that I prefer not to proceed.\n");
- exit(-1);
- }
- if (!ignore_history) {
- FILE *tfp;
- long uptime;
- if ((tfp = fopen("/proc/uptime", "r")) != NULL) {
- if (fscanf(tfp, "%ld", &uptime) != 1)
- uptime = -1;
- fclose(tfp);
- }
- if (uptime >= 0 && time(NULL) >= stb.st_mtime+uptime) {
- fprintf(stderr, "ifstat: history is aged out, resetting\n");
- ftruncate(fileno(hist_fp), 0);
- }
- }
-
- load_raw_table(hist_fp);
-
- hist_db = kern_db;
- kern_db = NULL;
- }
-
- if ((fd = socket(AF_UNIX, SOCK_STREAM, 0)) >= 0 &&
- (connect(fd, (struct sockaddr*)&sun, 2+1+strlen(sun.sun_path+1)) == 0
- || (strcpy(sun.sun_path+1, "ifstat0"),
- connect(fd, (struct sockaddr*)&sun, 2+1+strlen(sun.sun_path+1)) == 0))
- && verify_forging(fd) == 0) {
- FILE *sfp = fdopen(fd, "r");
- load_raw_table(sfp);
- if (hist_db && source_mismatch) {
- fprintf(stderr, "ifstat: history is stale, ignoring it.\n");
- hist_db = NULL;
- }
- fclose(sfp);
- } else {
- if (fd >= 0)
- close(fd);
- if (hist_db && info_source[0] && strcmp(info_source, "kernel")) {
- fprintf(stderr, "ifstat: history is stale, ignoring it.\n");
- hist_db = NULL;
- info_source[0] = 0;
- }
- load_info();
- if (info_source[0] == 0)
- strcpy(info_source, "kernel");
- }
-
- if (!no_output) {
- if (ignore_history || hist_db == NULL)
- dump_kern_db(stdout);
- else
- dump_incr_db(stdout);
- }
- if (!no_update) {
- ftruncate(fileno(hist_fp), 0);
- rewind(hist_fp);
- dump_raw_db(hist_fp, 1);
- fflush(hist_fp);
- }
- exit(0);
-}
git://git.onelab.eu / iproute2.git / blobdiff