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authorHeiner Kallweit <hkallweit1@gmail.com>2018-11-27 22:30:14 +0100
committerDavid S. Miller <davem@davemloft.net>2018-12-03 15:13:25 -0800
commitd1420bb9951592c6de4148de7441bfa93ce4eed5 (patch)
treea96567a03060800fe8a5dca87abe1c5ff0e42a46 /drivers/net/phy/phy.c
parent79dfab43a976b76713c40222987c48e32510ebc1 (diff)
net: phy: improve generic EEE ethtool functions
So far the two functions consider neither member eee_enabled nor eee_active. Therefore network drivers have to do this in some kind of glue code. I think this can be avoided. Getting EEE parameters: When not advertising any EEE mode, we can't consider EEE to be enabled. Therefore interpret "EEE enabled" as "we advertise at least one EEE mode". It's similar with "EEE active": interpret it as "EEE modes advertised by both link partner have at least one mode in common". Setting EEE parameters: If eee_enabled isn't set, don't advertise any EEE mode and restart aneg if needed to switch off EEE. If eee_enabled is set and data->advertised is empty (e.g. because EEE was disabled), advertise everything we support as default. This way EEE can easily switched on/off by doing ethtool --set-eee <if> eee on/off, w/o any additional parameters. The changes to both functions shouldn't break any existing user. Once the changes have been applied, at least some users can be simplified. Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/phy/phy.c')
-rw-r--r--drivers/net/phy/phy.c15
1 files changed, 10 insertions, 5 deletions
diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c
index 376a0d8a2b61..e1a1e54baac2 100644
--- a/drivers/net/phy/phy.c
+++ b/drivers/net/phy/phy.c
@@ -1144,6 +1144,7 @@ int phy_ethtool_get_eee(struct phy_device *phydev, struct ethtool_eee *data)
if (val < 0)
return val;
data->advertised = mmd_eee_adv_to_ethtool_adv_t(val);
+ data->eee_enabled = !!data->advertised;
/* Get LP advertisement EEE */
val = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_LPABLE);
@@ -1151,6 +1152,8 @@ int phy_ethtool_get_eee(struct phy_device *phydev, struct ethtool_eee *data)
return val;
data->lp_advertised = mmd_eee_adv_to_ethtool_adv_t(val);
+ data->eee_active = !!(data->advertised & data->lp_advertised);
+
return 0;
}
EXPORT_SYMBOL(phy_ethtool_get_eee);
@@ -1164,7 +1167,7 @@ EXPORT_SYMBOL(phy_ethtool_get_eee);
*/
int phy_ethtool_set_eee(struct phy_device *phydev, struct ethtool_eee *data)
{
- int cap, old_adv, adv, ret;
+ int cap, old_adv, adv = 0, ret;
if (!phydev->drv)
return -EIO;
@@ -1178,10 +1181,12 @@ int phy_ethtool_set_eee(struct phy_device *phydev, struct ethtool_eee *data)
if (old_adv < 0)
return old_adv;
- adv = ethtool_adv_to_mmd_eee_adv_t(data->advertised) & cap;
-
- /* Mask prohibited EEE modes */
- adv &= ~phydev->eee_broken_modes;
+ if (data->eee_enabled) {
+ adv = !data->advertised ? cap :
+ ethtool_adv_to_mmd_eee_adv_t(data->advertised) & cap;
+ /* Mask prohibited EEE modes */
+ adv &= ~phydev->eee_broken_modes;
+ }
if (old_adv != adv) {
ret = phy_write_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_ADV, adv);