net: phylink: Export phylink_caps_to_linkmodes

This function is convenient for MAC drivers. They can use it to add or
remove particular link modes based on capabilities (such as if half
duplex is not supported for a particular interface mode).

Signed-off-by: Sean Anderson <sean.anderson@seco.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/phy/phylink.c b/drivers/net/phy/phylink.c
index e9d62f9598f9d64528cdd308d5f0f90a80538090..c5c3f0b62d7f229b9ea2f8ba50dfb94a5fbcde6c 100644 (file)
--- a/drivers/net/phy/phylink.c
+++ b/drivers/net/phy/phylink.c
@@ -155,8 +155,15 @@ static const char *phylink_an_mode_str(unsigned int mode)
        return mode < ARRAY_SIZE(modestr) ? modestr[mode] : "unknown";
 }
 
-static void phylink_caps_to_linkmodes(unsigned long *linkmodes,
-                                     unsigned long caps)
+/**
+ * phylink_caps_to_linkmodes() - Convert capabilities to ethtool link modes
+ * @linkmodes: ethtool linkmode mask (must be already initialised)
+ * @caps: bitmask of MAC capabilities
+ *
+ * Set all possible pause, speed and duplex linkmodes in @linkmodes that are
+ * supported by the @caps. @linkmodes must have been initialised previously.
+ */
+void phylink_caps_to_linkmodes(unsigned long *linkmodes, unsigned long caps)
 {
        if (caps & MAC_SYM_PAUSE)
                __set_bit(ETHTOOL_LINK_MODE_Pause_BIT, linkmodes);
@@ -295,6 +302,7 @@ static void phylink_caps_to_linkmodes(unsigned long *linkmodes,
                __set_bit(ETHTOOL_LINK_MODE_400000baseCR4_Full_BIT, linkmodes);
        }
 }
+EXPORT_SYMBOL_GPL(phylink_caps_to_linkmodes);
 
 /**
  * phylink_get_linkmodes() - get acceptable link modes

diff --git a/include/linux/phylink.h b/include/linux/phylink.h
index 1f997e14bf80bd84c85d2bc6660a1cc26b4c7658..7cf26d7a522d034efe03dc5dd01c93f50c332af1 100644 (file)
--- a/include/linux/phylink.h
+++ b/include/linux/phylink.h
@@ -547,6 +547,7 @@ void pcs_link_up(struct phylink_pcs *pcs, unsigned int mode,
                 phy_interface_t interface, int speed, int duplex);
 #endif
 
+void phylink_caps_to_linkmodes(unsigned long *linkmodes, unsigned long caps);
 void phylink_get_linkmodes(unsigned long *linkmodes, phy_interface_t interface,
                           unsigned long mac_capabilities);
 void phylink_generic_validate(struct phylink_config *config,