static int irq_stats(const char *ifname, struct ifstat *s)
{
int i;
char *ptr, *ptr2;
char buff[4096];
FILE *fp;
/* We exclude lo! */
if (!strncmp("lo", ifname, strlen("lo")))
return 0;
fp = fopen("/proc/interrupts", "r");
if (!fp) {
whine("Cannot open /proc/interrupts!\n");
return -ENOENT;
}
stats_check_alloc(s);
memset(buff, 0, sizeof(buff));
while (fgets(buff, sizeof(buff), fp) != NULL) {
buff[sizeof(buff) - 1] = 0;
if (strstr(buff, ifname) == NULL)
continue;
ptr = buff;
while (*ptr != ':')
ptr++;
*ptr = 0;
s->irq_nr = atoi(buff);
bug_on(s->irq_nr == 0);
for (i = 0; i < s->irqs_len; ++i) {
ptr++;
ptr2 = ptr;
while (*ptr == ' ')
ptr++;
while (*ptr != ' ' && *ptr != 0)
ptr++;
*ptr = 0;
s->irqs[i] = atoi(ptr2);
}
memset(buff, 0, sizeof(buff));
}
fclose(fp);
return 0;
}
static int irq_sstats(struct ifstat *s)
{
int i, rx = 0;
char *ptr, *ptr2;
char buff[4096];
FILE *fp = fopen("/proc/softirqs", "r");
if (!fp) {
whine("Cannot open /proc/softirqs!\n");
return -ENOENT;
}
stats_check_alloc(s);
memset(buff, 0, sizeof(buff));
while (fgets(buff, sizeof(buff), fp) != NULL) {
buff[sizeof(buff) - 1] = 0;
if ((ptr = strstr(buff, "NET_TX:")) == NULL) {
ptr = strstr(buff, "NET_RX:");
if (ptr == NULL)
continue;
rx = 1;
} else {
rx = 0;
}
ptr += strlen("NET_TX:");
for (i = 0; i < s->irqs_len; ++i) {
ptr++;
while (*ptr == ' ')
ptr++;
ptr2 = ptr;
while (*ptr != ' ' && *ptr != 0)
ptr++;
*ptr = 0;
if (rx)
s->irqs_srx[i] = atoi(ptr2);
else
s->irqs_stx[i] = atoi(ptr2);
}
memset(buff, 0, sizeof(buff));
}
fclose(fp);
return 0;
}
static int sys_stats(struct ifstat *s)
{
int ret, cpu;
char *ptr, *ptr2;
char buff[4096];
FILE *fp = fopen("/proc/stat", "r");
if (!fp) {
whine("Cannot open /proc/stat!\n");
return -ENOENT;
}
stats_check_alloc(s);
memset(buff, 0, sizeof(buff));
while (fgets(buff, sizeof(buff), fp) != NULL) {
buff[sizeof(buff) - 1] = 0;
if ((ptr = strstr(buff, "cpu")) != NULL) {
ptr += strlen("cpu");
if (*ptr == ' ')
goto next;
ptr2 = ptr;
while (*ptr != ' ' && *ptr != 0)
ptr++;
*ptr = 0;
cpu = atoi(ptr2);
if (cpu < 0 || cpu >= s->irqs_len)
goto next;
ptr++;
ret = sscanf(ptr, "%lu%lu%lu%lu%lu", &s->cpu_user[cpu],
&s->cpu_nice[cpu], &s->cpu_sys[cpu],
&s->cpu_idle[cpu], &s->cpu_iow[cpu]);
if (ret != 5)
goto next;
} else if ((ptr = strstr(buff, "ctxt")) != NULL) {
ptr += strlen("ctxt");
ptr++;
while (*ptr == ' ')
ptr++;
ret = sscanf(ptr, "%lu", &s->ctxt);
if (ret != 1)
s->ctxt = 0;
} else if ((ptr = strstr(buff, "processes")) != NULL) {
ptr += strlen("processes");
ptr++;
while (*ptr == ' ')
ptr++;
ret = sscanf(ptr, "%lu", &s->forks);
if (ret != 1)
s->forks = 0;
} else if ((ptr = strstr(buff, "procs_running")) != NULL) {
ptr += strlen("procs_running");
ptr++;
while (*ptr == ' ')
ptr++;
ret = sscanf(ptr, "%lu", &s->procs_run);
if (ret != 1)
s->procs_run = 0;
} else if ((ptr = strstr(buff, "procs_blocked")) != NULL) {
ptr += strlen("procs_blocked");
ptr++;
while (*ptr == ' ')
ptr++;
ret = sscanf(ptr, "%lu", &s->procs_iow);
if (ret != 1)
s->procs_iow = 0;
}
next:
memset(buff, 0, sizeof(buff));
}
fclose(fp);
return 0;
}
