CNB: net: add netdev_sw_irq_coalesce_default_on()

Dan Campbellrequested to merge
dacampbe/centos-stream-9:bz2161921 into main

Bugzilla: https://bugzilla.redhat.com/2161921

commit d93607082e982223cf92750f2d9039ff365b9d24
Author: Heiner Kallweit hkallweit1@gmail.com
Date: Wed Nov 30 23:28:26 2022 +0100

net: add netdev_sw_irq_coalesce_default_on()  

Add a helper for drivers wanting to set SW IRQ coalescing  
by default. The related sysfs attributes can be used to  
override the default values.  

Follow Jakub's suggestion and put this functionality into  
net core so that drivers wanting to use software interrupt  
coalescing per default don't have to open-code it.  

Note that this function needs to be called before the  
netdevice is registered.  

Suggested-by: Jakub Kicinski <kuba@kernel.org>  
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>  
Signed-off-by: David S. Miller <davem@davemloft.net>

Signed-off-by: Dan Campbell dacampbe@redhat.com

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