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net: ethernet: Add helper to determine if pause configuration is supported

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Rather than have MAC drivers open code the test, add a helper in
phylib. This will help when we change the type of phydev->supported.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Andrew Lunn
2018-09-12 01:53:19 +02:00
committed by David S. Miller
parent 0c122405d4
commit 22b7d29926
6 changed files with 26 additions and 12 deletions
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20
drivers/net/phy/phy_device.c
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@@ -1863,6 +1863,26 @@ void phy_set_asym_pause(struct phy_device *phydev, bool rx, bool tx)
}
EXPORT_SYMBOL(phy_set_asym_pause);
/**
* phy_validate_pause - Test if the PHY/MAC support the pause configuration
* @phydev: phy_device struct
* @pp: requested pause configuration
*
* Description: Test if the PHY/MAC combination supports the Pause
* configuration the user is requesting. Returns True if it is
* supported, false otherwise.
*/
bool phy_validate_pause(struct phy_device *phydev,
struct ethtool_pauseparam *pp)
{
if (!(phydev->supported & SUPPORTED_Pause) ||
(!(phydev->supported & SUPPORTED_Asym_Pause) &&
pp->rx_pause != pp->tx_pause))
return false;
return true;
}
EXPORT_SYMBOL(phy_validate_pause);
static void of_set_phy_supported(struct phy_device *phydev)
{
struct device_node *node = phydev->mdio.dev.of_node;