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