On 3/14/2024 2:15 AM, Ulrich Weber wrote:
Current logic uses ICE_AQ_AN_COMPLETED information to
flag if autonegotiation is enabled or disabled.

Since new ethtool netlink interface checks if there is
a configuration change or not and ignores the call, if
there is no change, this makes is impossible to disable
autonegotiation on links without established autoneg.

This will change the logic to check the active phy
configuration if autoneg is enabled or not.


Sounds like a bug fix, so you should target this to 'iwl-net' and also add a Fixes:

Signed-off-by: Ulrich Weber <ulrich.we...@gmail.com>
---
  src/ice_ethtool.c | 10 +++++-----

What tree are you using? This is not a kernel path.

  1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/src/ice_ethtool.c b/src/ice_ethtool.c
index e1eeb16babb3..8fe475944f2c 100644
--- a/src/ice_ethtool.c
+++ b/src/ice_ethtool.c
@@ -2857,10 +2857,6 @@ ice_get_link_ksettings(struct net_device *netdev,
        else
                ice_get_settings_link_down(ks, netdev);
- /* set autoneg settings */
-       ks->base.autoneg = (hw_link_info->an_info & ICE_AQ_AN_COMPLETED) ?
-               AUTONEG_ENABLE : AUTONEG_DISABLE;
-
        /* set media type settings */
switch (vsi->port_info->phy.media_type) {
@@ -2912,6 +2908,10 @@ ice_get_link_ksettings(struct net_device *netdev,
        if (err)
                goto done;
+ /* set autoneg settings based on active configuration */
+       ks->base.autoneg = ice_is_phy_caps_an_enabled(caps) ?
+               AUTONEG_ENABLE : AUTONEG_DISABLE;

Since this needs to move to after the PHY capabilities call anyways, it'd be nicer to put this with the rest of the autoneg code. You could probably utilize the existing ice_is_phy_caps_an_enabled check and not add a second call as well.

Thanks,
Tony

+
        /* Set the advertised flow control based on the PHY capability */
        if ((caps->caps & ICE_AQC_PHY_EN_TX_LINK_PAUSE) &&
            (caps->caps & ICE_AQC_PHY_EN_RX_LINK_PAUSE)) {
@@ -2960,7 +2960,7 @@ ice_get_link_ksettings(struct net_device *netdev,
                ethtool_link_ksettings_add_link_mode(ks, supported, FEC_RS);
  #endif /* ETHTOOL_GFECPARAM */
- /* Set supported and advertised autoneg */
+       /* Set supported and advertised autoneg based on media */
        if (ice_is_phy_caps_an_enabled(caps)) {
                ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
                ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);

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