This appears to be a bug in the cisco enic driver. It will always
report 10000baseT/Full, regardless of the link speed itself. It has
always been like this in mainline, and I am also not supprised if the
upstream driver is also similarly broken.
static int enic_get_ksettings(struct net_device *netdev,
struct ethtool_link_ksettings *ecmd)
{
[...]
ethtool_link_ksettings_add_link_mode(ecmd, supported,
10000baseT_Full);
ethtool_link_ksettings_add_link_mode(ecmd, supported, FIBRE);
ethtool_link_ksettings_add_link_mode(ecmd, advertising,
10000baseT_Full);
ethtool_link_ksettings_add_link_mode(ecmd, advertising, FIBRE);
base->port = PORT_FIBRE;
if (netif_carrier_ok(netdev)) {
base->speed = vnic_dev_port_speed(enic->vdev);
base->duplex = DUPLEX_FULL;
} else {
base->speed = SPEED_UNKNOWN;
base->duplex = DUPLEX_UNKNOWN;
}
[...]
}
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https://bugs.launchpad.net/bugs/1881821
Title:
Kernel does not report interface speed correctly for Cisco UCS B200 M5
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