Potential display issue with 88997e4208ae "net/8021q: create device with all possible features in wanted_features"

From: Yunsheng Lin <hidden>
Date: 2018-02-06 09:12:59

Hi, all

During testing, below cmd is used to add a vlan dev.
vconfig add eth0 1000

Without the commit 88997e4208ae(I revert the patch in the
latest net-next)

ethtool -k eth0 | grep rx-checksumming
rx-checksumming: on

ethtool -k eth0.1000 | grep rx-checksumming
rx-checksumming: on [fixed]

ethtool -K eth0 rx off

ethtool -k eth0 | grep rx-checksumming
rx-checksumming: off

ethtool -k eth0.1000 | grep rx-checksumming
rx-checksumming: off [fixed]

-----------------------------------------

With the commit 88997e4208ae

ethtool -k eth0 | grep rx-checksumming
rx-checksumming: on

ethtool -k eth0.1000 | grep rx-checksumming
rx-checksumming: off [fixed]

ethtool -K eth0 rx off

ethtool -k eth0 | grep rx-checksumming
rx-checksumming: off

ethtool -k eth0.1000 | grep rx-checksumming
rx-checksumming: off [fixed]


So the vlan dev' rx-csum feature is not changed automatically
according to the lower dev' rx-csum feature after commit 88997e4208ae.

Is this a display issue? And Do we need to fix this issue?

MBR,
Yunsheng Lin
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