link.c

#include <sys/types.h>
#include <sys/ioctl.h>
#include <linux/sockios.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>

#include "link.h"
#include "sock.h"
#include "str.h"

uint32_t wireless_bitrate(const char *ifname)
{
	int sock, ret;
	uint32_t rate_in_mbit;
	struct iwreq iwr;

	sock = af_socket(AF_INET);

	memset(&iwr, 0, sizeof(iwr));
	strlcpy(iwr.ifr_name, ifname, IFNAMSIZ);

	ret = ioctl(sock, SIOCGIWRATE, &iwr);
	if (!ret)
		rate_in_mbit = iwr.u.bitrate.value / 1000000;
	else
		rate_in_mbit = 0;

	close(sock);

	return rate_in_mbit;
}

int wireless_sigqual(const char *ifname, struct iw_statistics *stats)
{
	int ret, sock;
	struct iwreq iwr;

	sock = af_socket(AF_INET);

	memset(&iwr, 0, sizeof(iwr));
	strlcpy(iwr.ifr_name, ifname, IFNAMSIZ);

	iwr.u.data.pointer = (caddr_t) stats;
	iwr.u.data.length = sizeof(*stats);
	iwr.u.data.flags = 1;

	ret = ioctl(sock, SIOCGIWSTATS, &iwr);

	close(sock);

	return ret;
}

int wireless_rangemax_sigqual(const char *ifname)
{
	int ret, sock, sigqual;
	struct iwreq iwr;
	struct iw_range iwrange;

	sock = af_socket(AF_INET);

	memset(&iwrange, 0, sizeof(iwrange));

	memset(&iwr, 0, sizeof(iwr));
	strlcpy(iwr.ifr_name, ifname, IFNAMSIZ);

	iwr.u.data.pointer = (caddr_t) &iwrange;
	iwr.u.data.length = sizeof(iwrange);
	iwr.u.data.flags = 0;

	ret = ioctl(sock, SIOCGIWRANGE, &iwr);
	if (!ret)
		sigqual = iwrange.max_qual.qual;
	else
		sigqual = 0;

	close(sock);

	return sigqual;
}

uint32_t ethtool_bitrate(const char *ifname)
{
	int ret, sock;
	uint32_t bitrate;
	struct ifreq ifr;
	struct ethtool_cmd ecmd;

	sock = af_socket(AF_INET);

	memset(&ecmd, 0, sizeof(ecmd));

	memset(&ifr, 0, sizeof(ifr));
	strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);

	ecmd.cmd = ETHTOOL_GSET;
	ifr.ifr_data = (char *) &ecmd;

	ret = ioctl(sock, SIOCETHTOOL, &ifr);
	if (ret) {
		bitrate = 0;
		goto out;
	}

	bitrate = ethtool_cmd_speed(&ecmd);
	if (bitrate == SPEED_UNKNOWN)
		bitrate = 0;
out:
	close(sock);

	return bitrate;
}

int ethtool_link(const char *ifname)
{
	int ret, sock;
	struct ifreq ifr;
	struct ethtool_value ecmd;

	sock = af_socket(AF_INET);

	memset(&ecmd, 0, sizeof(ecmd));

	memset(&ifr, 0, sizeof(ifr));
	strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);

	ecmd.cmd = ETHTOOL_GLINK;
	ifr.ifr_data = (char *) &ecmd;

	ret = ioctl(sock, SIOCETHTOOL, &ifr);
	if (ret)
		ret = -EINVAL;
	else
		ret = !!ecmd.data;

	close(sock);
	return ret;
}

int ethtool_drvinf(const char *ifname, struct ethtool_drvinfo *drvinf)
{
	int ret, sock;
	struct ifreq ifr;

	sock = af_socket(AF_INET);

	memset(drvinf, 0, sizeof(*drvinf));

	memset(&ifr, 0, sizeof(ifr));
	strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);

	drvinf->cmd = ETHTOOL_GDRVINFO;
	ifr.ifr_data = (char *) drvinf;

	ret = ioctl(sock, SIOCETHTOOL, &ifr);

	close(sock);

	return ret;
}