54 lines
1.2 KiB
C
54 lines
1.2 KiB
C
|
/* See LICENSE file for copyright and license details. */
|
||
|
|
#include <stdio.h>
|
||
|
|
#include <limits.h>
|
||
|
|
|
||
|
|
#include "../util.h"
|
||
|
|
|
||
|
|
#if defined(__linux__)
|
||
|
|
const char *
|
||
|
|
netspeed_rx(const char *interface)
|
||
|
|
{
|
||
|
|
static int valid;
|
||
|
|
static unsigned long long rxbytes;
|
||
|
|
unsigned long oldrxbytes;
|
||
|
|
extern const unsigned int interval;
|
||
|
|
char path[PATH_MAX];
|
||
|
|
|
||
|
|
oldrxbytes = rxbytes;
|
||
|
|
snprintf(path, sizeof(path), "/sys/class/net/%s/statistics/rx_bytes", interface);
|
||
|
|
if (pscanf(path, "%llu", &rxbytes) != 1) {
|
||
|
|
return NULL;
|
||
|
|
}
|
||
|
|
if (!valid) {
|
||
|
|
valid = 1;
|
||
|
|
return NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
return fmt_scaled((rxbytes - oldrxbytes) / interval * 1000);
|
||
|
|
}
|
||
|
|
|
||
|
|
const char *
|
||
|
|
netspeed_tx(const char *interface)
|
||
|
|
{
|
||
|
|
static int valid;
|
||
|
|
static unsigned long long txbytes;
|
||
|
|
unsigned long oldtxbytes;
|
||
|
|
extern const unsigned int interval;
|
||
|
|
char path[PATH_MAX];
|
||
|
|
|
||
|
|
oldtxbytes = txbytes;
|
||
|
|
snprintf(path, sizeof(path), "/sys/class/net/%s/statistics/tx_bytes", interface);
|
||
|
|
if (pscanf(path, "%llu", &txbytes) != 1) {
|
||
|
|
return NULL;
|
||
|
|
}
|
||
|
|
if (!valid) {
|
||
|
|
valid = 1;
|
||
|
|
return NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
return fmt_scaled((txbytes - oldtxbytes) / interval * 1000);
|
||
|
|
}
|
||
|
|
#elif defined(__OpenBSD__)
|
||
|
|
/* unimplemented */
|
||
|
|
#endif
|