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.
