netdev - RE: [PATCH net-next 5/5] r8152: change rx_frag_head_sz and rx_max_agg

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Date:   Thu, 8 Aug 2019 12:16:50 +0000
From:   Hayes Wang <hayeswang@...ltek.com>
To:     Maciej Fijalkowski <maciejromanfijalkowski@...il.com>
CC:     Jakub Kicinski <jakub.kicinski@...ronome.com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        nic_swsd <nic_swsd@...ltek.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>
Subject: RE: [PATCH net-next 5/5] r8152: change rx_frag_head_sz and rx_max_agg_num dynamically

Maciej Fijalkowski [mailto:maciejromanfijalkowski@...il.com]
> 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.


Best Regards,
Hayes