platform: move supports_mii_carrier_detect() to nmp_utils_mii_supports_carrier_detect()

src/platform/nm-linux-platform.c

@@ -31,9 +31,6 @@
 #include <linux/if_link.h>
 #include <linux/if_tun.h>
 #include <linux/if_tunnel.h>
-#include <sys/ioctl.h>
-#include <linux/sockios.h>
-#include <linux/mii.h>
 #include <netlink/netlink.h>
 #include <netlink/object.h>
 #include <netlink/cache.h>
@@ -2583,46 +2580,6 @@ link_set_user_ipv6ll_enabled (NMPlatform *platform, int ifindex, gboolean enable
 	return FALSE;
 }
 
-static gboolean
-supports_mii_carrier_detect (const char *ifname)
-{
-	int fd;
-	struct ifreq ifr;
-	struct mii_ioctl_data *mii;
-	gboolean supports_mii = FALSE;
-
-	fd = socket (PF_INET, SOCK_DGRAM, 0);
-	if (fd < 0) {
-		nm_log_err (LOGD_PLATFORM, "couldn't open control socket.");
-		return FALSE;
-	}
-
-	memset (&ifr, 0, sizeof (struct ifreq));
-	strncpy (ifr.ifr_name, ifname, IFNAMSIZ);
-
-	errno = 0;
-	if (ioctl (fd, SIOCGMIIPHY, &ifr) < 0) {
-		nm_log_dbg (LOGD_PLATFORM, "SIOCGMIIPHY failed: %d", errno);
-		goto out;
-	}
-
-	/* If we can read the BMSR register, we assume that the card supports MII link detection */
-	mii = (struct mii_ioctl_data *) &ifr.ifr_ifru;
-	mii->reg_num = MII_BMSR;
-
-	if (ioctl (fd, SIOCGMIIREG, &ifr) == 0) {
-		nm_log_dbg (LOGD_PLATFORM, "SIOCGMIIREG result 0x%X", mii->val_out);
-		supports_mii = TRUE;
-	} else {
-		nm_log_dbg (LOGD_PLATFORM, "SIOCGMIIREG failed: %d", errno);
-	}
-
- out:
-	close (fd);
-	nm_log_dbg (LOGD_PLATFORM, "MII %s supported", supports_mii ? "is" : "not");
-	return supports_mii;	
-}
-
 static gboolean
 link_supports_carrier_detect (NMPlatform *platform, int ifindex)
 {
@@ -2635,7 +2592,7 @@ link_supports_carrier_detect (NMPlatform *platform, int ifindex)
 	 * us whether the device actually supports carrier detection in the first
 	 * place. We assume any device that does implements one of these two APIs.
 	 */
-	return nmp_utils_ethtool_supports_carrier_detect (name) || supports_mii_carrier_detect (name);
+	return nmp_utils_ethtool_supports_carrier_detect (name) || nmp_utils_mii_supports_carrier_detect (name);
 }
 
 static gboolean

src/platform/nm-platform-utils.c

@@ -26,6 +26,7 @@
 #include <sys/ioctl.h>
 #include <linux/ethtool.h>
 #include <linux/sockios.h>
+#include <linux/mii.h>
 
 #include "gsystem-local-alloc.h"
 #include "nm-utils.h"
@@ -231,6 +232,55 @@ nmp_utils_ethtool_get_wake_on_lan (const char *ifname)
 	return wol.wolopts != 0;
 }
 
+/******************************************************************
+ * mii
+ ******************************************************************/
+
+gboolean
+nmp_utils_mii_supports_carrier_detect (const char *ifname)
+{
+	int fd, errsv;
+	struct ifreq ifr;
+	struct mii_ioctl_data *mii;
+	gboolean supports_mii = FALSE;
+
+	if (!ifname)
+		return FALSE;
+
+	fd = socket (PF_INET, SOCK_DGRAM, 0);
+	if (fd < 0) {
+		nm_log_err (LOGD_PLATFORM, "mii: couldn't open control socket (%s)", ifname);
+		return FALSE;
+	}
+
+	memset (&ifr, 0, sizeof (struct ifreq));
+	strncpy (ifr.ifr_name, ifname, IFNAMSIZ);
+
+	errno = 0;
+	if (ioctl (fd, SIOCGMIIPHY, &ifr) < 0) {
+		errsv = errno;
+		nm_log_dbg (LOGD_PLATFORM, "mii: SIOCGMIIPHY failed: %s (%d) (%s)", strerror (errsv), errsv, ifname);
+		goto out;
+	}
+
+	/* If we can read the BMSR register, we assume that the card supports MII link detection */
+	mii = (struct mii_ioctl_data *) &ifr.ifr_ifru;
+	mii->reg_num = MII_BMSR;
+
+	if (ioctl (fd, SIOCGMIIREG, &ifr) == 0) {
+		nm_log_dbg (LOGD_PLATFORM, "mii: SIOCGMIIREG result 0x%X (%s)", mii->val_out, ifname);
+		supports_mii = TRUE;
+	} else {
+		errsv = errno;
+		nm_log_dbg (LOGD_PLATFORM, "mii: SIOCGMIIREG failed: %s (%d) (%s)", strerror (errsv), errsv, ifname);
+	}
+
+out:
+	close (fd);
+	nm_log_dbg (LOGD_PLATFORM, "mii: MII %s supported (%s)", supports_mii ? "is" : "not", ifname);
+	return supports_mii;
+}
+
 /******************************************************************
  * udev
  ******************************************************************/

src/platform/nm-platform-utils.h

@@ -44,6 +44,9 @@ gboolean  nmp_utils_ethtool_get_permanent_address (const char *ifname,
                                                    size_t *length);
 
 
+gboolean nmp_utils_mii_supports_carrier_detect (const char *ifname);
+
+
 const char *nmp_utils_udev_get_driver (GUdevDevice *device);