xutils: move device management functions out of xutils

Move those functions out so that they can be more easily maintained
in its separate file.

Signed-off-by: Daniel Borkmann <dborkman@redhat.com>

1 files changed, 169 insertions, 0 deletions

diff --git a/dev.c b/dev.c
new file mode 100644
index 0000000..56a1a51
--- /dev/null
+++ b/dev.c
@@ -0,0 +1,169 @@
+#include <string.h>
+#include <errno.h>
+#include <sys/ioctl.h>
+#include <sys/types.h>
+#include <ifaddrs.h>
+
+#include "dev.h"
+#include "str.h"
+#include "die.h"
+#include "xutils.h"
+
+int device_ifindex(const char *ifname)
+{
+	int ret, sock, index;
+	struct ifreq ifr;
+
+	if (!strncmp("any", ifname, strlen("any")))
+		return 0;
+
+	sock = af_socket(AF_INET);
+
+	memset(&ifr, 0, sizeof(ifr));
+	strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
+
+	ret = ioctl(sock, SIOCGIFINDEX, &ifr);
+	if (!ret)
+		index = ifr.ifr_ifindex;
+	else
+		index = -1;
+
+	close(sock);
+
+	return index;
+}
+
+static int __device_address6(const char *ifname, struct sockaddr_storage *ss)
+{
+	int ret, family, found = -EINVAL;
+	struct ifaddrs *ifaddr, *ifa;
+
+	ret = getifaddrs(&ifaddr);
+	if (ret < 0)
+		panic("Cannot get device addresses for IPv6!\n");
+
+	for (ifa = ifaddr; ifa != NULL; ifa = ifa->ifa_next) {
+		family = ifa->ifa_addr->sa_family;
+		if (family != AF_INET6)
+			continue;
+		if (strcmp(ifa->ifa_name, ifname))
+			continue;
+
+		memcpy(ss, ifa->ifa_addr, sizeof(*ss));
+		found = 0;
+		break;
+	}
+
+	freeifaddrs(ifaddr);
+	return found;
+}
+
+int device_address(const char *ifname, int af, struct sockaddr_storage *ss)
+{
+	int ret, sock;
+	struct ifreq ifr;
+
+	if (!ss)
+		return -EINVAL;
+	if (!strncmp("any", ifname, strlen("any")))
+		return -EINVAL;
+	if (af == AF_INET6)
+		return __device_address6(ifname, ss);
+
+	sock = af_socket(af);
+
+	memset(&ifr, 0, sizeof(ifr));
+	strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
+
+	ifr.ifr_addr.sa_family = af;
+
+	ret = ioctl(sock, SIOCGIFADDR, &ifr);
+	if (!ret)
+		memcpy(ss, &ifr.ifr_addr, sizeof(ifr.ifr_addr));
+
+	close(sock);
+
+	return ret;
+}
+
+int device_mtu(const char *ifname)
+{
+	int ret, sock, mtu;
+	struct ifreq ifr;
+
+	sock = af_socket(AF_INET);
+
+	memset(&ifr, 0, sizeof(ifr));
+	strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
+
+	ret = ioctl(sock, SIOCGIFMTU, &ifr);
+	if (!ret)
+		mtu = ifr.ifr_mtu;
+	else
+		mtu = 0;
+
+	close(sock);
+
+	return mtu;
+}
+
+short device_get_flags(const char *ifname)
+{
+	short flags;
+	int ret, sock;
+	struct ifreq ifr;
+
+	sock = af_socket(AF_INET);
+
+	memset(&ifr, 0, sizeof(ifr));
+	strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
+
+	ret = ioctl(sock, SIOCGIFFLAGS, &ifr);
+	if (!ret)
+		flags = ifr.ifr_flags;
+	else
+		flags = 0;
+
+	close(sock);
+
+	return flags;
+}
+
+void device_set_flags(const char *ifname, const short flags)
+{
+	int ret, sock;
+	struct ifreq ifr;
+
+	sock = af_socket(AF_INET);
+
+	memset(&ifr, 0, sizeof(ifr));
+	strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
+
+	ifr.ifr_flags = flags;
+
+	ret = ioctl(sock, SIOCSIFFLAGS, &ifr);
+	if (ret < 0)
+		panic("Cannot set NIC flags!\n");
+
+	close(sock);
+}
+
+int device_up_and_running(char *ifname)
+{
+	if (!ifname)
+		return -EINVAL;
+	if (!strncmp("any", ifname, strlen("any")))
+		return 1;
+
+	return (device_get_flags(ifname) & (IFF_UP | IFF_RUNNING)) == (IFF_UP | IFF_RUNNING);
+}
+
+u32 device_bitrate(const char *ifname)
+{
+	u32 speed_c, speed_w;
+
+	speed_c = ethtool_bitrate(ifname);
+	speed_w = wireless_bitrate(ifname);
+
+	return (speed_c == 0 ? speed_w : speed_c);
+}