[PATCH net-next v5 08/13] net: phy: phy_device: Use link_capabilities lookup for PHY aneg config

From: Maxime Chevallier
Date: Fri Mar 07 2025 - 12:38:59 EST


When configuring PHY advertising with autoneg disabled, we lookd for an
exact linkmode to advertise and configure for the requested Speed and
Duplex, specially at or over 1G.

Using phy_caps_lookup allows us to build a list of the supported
linkmodes at that speed that we can advertise instead of the first mode
that matches.

Signed-off-by: Maxime Chevallier <maxime.chevallier@xxxxxxxxxxx>
---
drivers/net/phy/phy_device.c | 11 ++++++-----
1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c
index 4980862398d0..3f734e847e8e 100644
--- a/drivers/net/phy/phy_device.c
+++ b/drivers/net/phy/phy_device.c
@@ -2120,7 +2120,7 @@ EXPORT_SYMBOL(genphy_check_and_restart_aneg);
int __genphy_config_aneg(struct phy_device *phydev, bool changed)
{
__ETHTOOL_DECLARE_LINK_MODE_MASK(fixed_advert);
- const struct phy_setting *set;
+ const struct link_capabilities *c;
unsigned long *advert;
int err;

@@ -2146,10 +2146,11 @@ int __genphy_config_aneg(struct phy_device *phydev, bool changed)
} else {
linkmode_zero(fixed_advert);

- set = phy_lookup_setting(phydev->speed, phydev->duplex,
- phydev->supported, true);
- if (set)
- linkmode_set_bit(set->bit, fixed_advert);
+ c = phy_caps_lookup(phydev->speed, phydev->duplex,
+ phydev->supported, true);
+ if (c)
+ linkmode_and(fixed_advert, phydev->supported,
+ c->linkmodes);

advert = fixed_advert;
}
--
2.48.1