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/* See LICENSE file for copyright and license details. */
#include <limits.h>
#include <stdio.h>
#include "../slstatus.h"
#include "../util.h"
#if defined(__linux__)
#include <stdint.h>
#define NET_RX_BYTES "/sys/class/net/%s/statistics/rx_bytes"
const char *
netspeed_rx(const char *interface)
{
uintmax_t oldrxbytes;
static uintmax_t rxbytes;
extern const unsigned int interval;
char path[PATH_MAX];
oldrxbytes = rxbytes;
if (esnprintf(path, sizeof(path), NET_RX_BYTES, interface) < 0)
return NULL;
if (pscanf(path, "%ju", &rxbytes) != 1)
return NULL;
if (oldrxbytes == 0)
return NULL;
return fmt_human((rxbytes - oldrxbytes) * 1000 / interval,
1024);
}
#elif defined(__OpenBSD__) | defined(__FreeBSD__)
#include <ifaddrs.h>
#include <net/if.h>
#include <string.h>
#include <sys/types.h>
#include <sys/socket.h>
const char *
netspeed_tx(const char *interface)
{
struct ifaddrs *ifal, *ifa;
struct if_data *ifd;
uintmax_t oldtxbytes;
static uintmax_t txbytes;
extern const unsigned int interval;
int if_ok = 0;
oldtxbytes = txbytes;
if (getifaddrs(&ifal) < 0) {
warn("getifaddrs failed");
return NULL;
}
txbytes = 0;
for (ifa = ifal; ifa; ifa = ifa->ifa_next)
if (!strcmp(ifa->ifa_name, interface) &&
(ifd = (struct if_data *)ifa->ifa_data))
txbytes += ifd->ifi_obytes, if_ok = 1;
freeifaddrs(ifal);
if (!if_ok) {
warn("reading 'if_data' failed");
return NULL;
}
if (oldtxbytes == 0)
return NULL;
return fmt_human((txbytes - oldtxbytes) * 1000 / interval,
1024);
}
#endif
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