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/linux/drivers/net/ethernet/intel/igc/ |
H A D | igc_ethtool.c | diff 329a3678ec69962aa67c91397efbd46d36635f91 Tue Nov 17 20:50:40 CET 2020 Corinna Vinschen <vinschen@redhat.com> igc: fix link speed advertising
Link speed advertising in igc has two problems:
- When setting the advertisement via ethtool, the link speed is converted to the legacy 32 bit representation for the intel PHY code. This inadvertently drops ETHTOOL_LINK_MODE_2500baseT_Full_BIT (being beyond bit 31). As a result, any call to `ethtool -s ...' drops the 2500Mbit/s link speed from the PHY settings. Only reloading the driver alleviates that problem.
Fix this by converting the ETHTOOL_LINK_MODE_2500baseT_Full_BIT to the Intel PHY ADVERTISE_2500_FULL bit explicitly.
- Rather than checking the actual PHY setting, the .get_link_ksettings function always fills link_modes.advertising with all link speeds the device is capable of.
Fix this by checking the PHY autoneg_advertised settings and report only the actually advertised speeds up to ethtool.
Fixes: 8c5ad0dae93c ("igc: Add ethtool support") Signed-off-by: Corinna Vinschen <vinschen@redhat.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
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