On Mon, Mar 29, 2021 at 07:16:51PM -0700, Grant Grundler wrote:
> From: Grant Grundler <Grant Grundler grund...@chromium.org>
>
> Until very recently, the usbnet framework only had support functions
> for devices which reported the link speed by explicitly querying the
> PHY over a MDIO interface. However, the cdc_ether devices send
> notifications when the link state or link speeds change and do not
> expose the PHY (or modem) directly.
>
> Support funtions (e.g. usbnet_get_link_ksettings_internal()) to directly
> query state recorded by the cdc_ether driver were added in a previous patch.
>
> Instead of cdc_ether spewing the link speed into the dmesg buffer,
> record the link speed encoded in these notifications and tell the
> usbnet framework to use the new functions to get link speed/state.
>
> User space can now get the most recent link speed/state using ethtool.
>
> v4: added to series since cdc_ether uses same notifications
> as cdc_ncm driver.
>
> Signed-off-by: Grant Grundler <grund...@chromium.org>
Reviewed-by: Andrew Lunn <and...@lunn.ch>
Andrew
