Re: [PATCH net-next 5/5] r8152: change rx_frag_head_sz and rx_max_agg_num dynamically

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On Thu, 8 Aug 2019 12:16:50 +0000, Hayes Wang wrote:
> Maciej Fijalkowski [mailto:maciejromanfijalkowski@xxxxxxxxx]
> > Sent: Thursday, August 08, 2019 7:50 PM  
> > > Excuse me again.
> > > I find the kernel supports the copybreak of Ethtool.
> > > However, I couldn't find a command of Ethtool to use it.  
> > 
> > Ummm there's set_tunable ops. Amazon's ena driver is making use of it from
> > what
> > I see. Look at ena_set_tunable() in
> > drivers/net/ethernet/amazon/ena/ena_ethtool.c.  
> 
> The kernel could support it. And I has finished it.
> However, when I want to test it by ethtool, I couldn't find suitable command.
> I couldn't find relative feature in the source code of ethtool, either.

It's possible it's not implemented in the user space tool 🤔

Looks like it got posted here:

https://www.spinics.net/lists/netdev/msg299877.html

But perhaps never finished? 

It should be fairly straightforward to implement by looking at how
phy-tunables are handled.




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