net: ethtool: export conversion function between u32 and link mode

The function convert_legacy_u32_to_link_mode and
convert_link_mode_to_legacy_u32 may be used outside
of ethtool.c. We rename them to ethtool_convert_...
and export them, so we could use them in others
drivers and modules.
Signed-off-by: Philippe Reynes <tremyfr@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

include/linux/ethtool.h

@@ -150,6 +150,13 @@ extern int
 __ethtool_get_link_ksettings(struct net_device *dev,
 			     struct ethtool_link_ksettings *link_ksettings);
 
+void ethtool_convert_legacy_u32_to_link_mode(unsigned long *dst,
+					     u32 legacy_u32);
+
+/* return false if src had higher bits set. lower bits always updated. */
+bool ethtool_convert_link_mode_to_legacy_u32(u32 *legacy_u32,
+				     const unsigned long *src);
+
 /**
  * struct ethtool_ops - optional netdev operations
  * @get_settings: DEPRECATED, use %get_link_ksettings/%set_link_ksettings

net/core/ethtool.c

@@ -391,14 +391,16 @@ static int __ethtool_set_flags(struct net_device *dev, u32 data)
 	return 0;
 }
 
-static void convert_legacy_u32_to_link_mode(unsigned long *dst, u32 legacy_u32)
+void ethtool_convert_legacy_u32_to_link_mode(unsigned long *dst,
+					     u32 legacy_u32)
 {
 	bitmap_zero(dst, __ETHTOOL_LINK_MODE_MASK_NBITS);
 	dst[0] = legacy_u32;
 }
+EXPORT_SYMBOL(ethtool_convert_legacy_u32_to_link_mode);
 
 /* return false if src had higher bits set. lower bits always updated. */
-static bool convert_link_mode_to_legacy_u32(u32 *legacy_u32,
+bool ethtool_convert_link_mode_to_legacy_u32(u32 *legacy_u32,
 					     const unsigned long *src)
 {
 	bool retval = true;
@@ -419,6 +421,7 @@ static bool convert_link_mode_to_legacy_u32(u32 *legacy_u32,
 	*legacy_u32 = src[0];
 	return retval;
 }
+EXPORT_SYMBOL(ethtool_convert_link_mode_to_legacy_u32);
 
 /* return false if legacy contained non-0 deprecated fields
  * transceiver/maxtxpkt/maxrxpkt. rest of ksettings always updated
@@ -441,13 +444,13 @@ convert_legacy_settings_to_link_ksettings(
 	    legacy_settings->maxrxpkt)
 		retval = false;
 
-	convert_legacy_u32_to_link_mode(
+	ethtool_convert_legacy_u32_to_link_mode(
 		link_ksettings->link_modes.supported,
 		legacy_settings->supported);
-	convert_legacy_u32_to_link_mode(
+	ethtool_convert_legacy_u32_to_link_mode(
 		link_ksettings->link_modes.advertising,
 		legacy_settings->advertising);
-	convert_legacy_u32_to_link_mode(
+	ethtool_convert_legacy_u32_to_link_mode(
 		link_ksettings->link_modes.lp_advertising,
 		legacy_settings->lp_advertising);
 	link_ksettings->base.speed
@@ -486,13 +489,13 @@ convert_link_ksettings_to_legacy_settings(
 	 * __u32	maxrxpkt;
 	 */
 
-	retval &= convert_link_mode_to_legacy_u32(
+	retval &= ethtool_convert_link_mode_to_legacy_u32(
 		&legacy_settings->supported,
 		link_ksettings->link_modes.supported);
-	retval &= convert_link_mode_to_legacy_u32(
+	retval &= ethtool_convert_link_mode_to_legacy_u32(
 		&legacy_settings->advertising,
 		link_ksettings->link_modes.advertising);
-	retval &= convert_link_mode_to_legacy_u32(
+	retval &= ethtool_convert_link_mode_to_legacy_u32(
 		&legacy_settings->lp_advertising,
 		link_ksettings->link_modes.lp_advertising);
 	ethtool_cmd_speed_set(legacy_settings, link_ksettings->base.speed);