On 12/22/2019 3:46 PM, Michal Kubecek wrote:

Implement LINKSTATE_GET netlink request to get link state information.

At the moment, only link up flag as provided by ETHTOOL_GLINK ioctl command
is returned.

LINKSTATE_GET request can be used with NLM_F_DUMP (without device
identification) to request the information for all devices in current
network namespace providing the data.

Signed-off-by: Michal Kubecek <redacted>
---

[snip]

+Kernel response contents:
+
+  ====================================  ======  ==========================
+  ``ETHTOOL_A_LINKSTATE_HEADER``        nested  reply header
+  ``ETHTOOL_A_LINKSTATE_LINK``          u8      autonegotiation status

^ ==== Humm, auto-negotiation status may not be exactly accurate
especially with complex devices with SerDes/PHY/SFPs/what have you/.
Other than that, the code looks correct:

Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
-- 
Florian