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net: phylink: Export phylink_caps_to_linkmodes

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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>
This commit is contained in:
Sean Anderson 2022-09-20 18:12:29 -04:00 committed by David S. Miller
parent 72bc36956f
commit 606116529a
2 changed files with 11 additions and 2 deletions
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12
drivers/net/phy/phylink.c
View file

@ -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

1
include/linux/phylink.h
View file

@ -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,