From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ben Greear Date: Fri, 18 Dec 2020 15:07:06 -0800 Subject: [Intel-wired-lan] 5.10.0 kernel regression for 2.5Gbps link negotiation? In-Reply-To: <3bcba0ca-8f3b-8428-861a-86aaff1688b6@molgen.mpg.de> References: <7bb485c3-9556-d9f1-e70f-a4b3a05909c9@candelatech.com> <3bcba0ca-8f3b-8428-861a-86aaff1688b6@molgen.mpg.de> Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: intel-wired-lan@osuosl.org List-ID: On 12/18/20 11:43 AM, Paul Menzel wrote: > Dear Todd, > > > Am 18.12.20 um 20:27 schrieb Fujinaka, Todd: >> Yes, and I'm plugging the hole in the README right now. Here's the proposed text: >> >> Advertisements for 2.5G and 5G on the x550 were turned off by default due to >> interoperability issues with certain switches. To turn them back on, use >> >> ethtool -s advertise N >> >> where N is a combination of the following. >> >> 100baseTFull??? 0x008 >> 1000baseTFull?? 0x020 >> 2500baseTFull?? 0x800000000000 >> 5000baseTFull?? 0x1000000000000 >> 10000baseTFull? 0x1000 >> >> For example, to turn on all modes: >> ethtool -s advertise 0x1800000001028 >> >> For more details please see the ethtool man page. > > What commit introduced this regression. Please bear in mind, that this contradicts Linux? no-regression policy, and the commit should therefore be reverted as > soon as possible. Looks like it is at the end of this patch, though the description doesn't mention changing defaults: Commit a296d665eae1e8ec6445683bfb999c884058426a Author: Radoslaw Tyl Date: Fri Jun 26 15:28:14 2020 +0200 ixgbe: Add ethtool support to enable 2.5 and 5.0 Gbps support Added full support for new version Ethtool API. New API allow use 2500Gbase-T and 5000base-T supported and advertised link speed modes. Signed-off-by: Radoslaw Tyl Tested-by: Andrew Bowers Signed-off-by: Tony Nguyen Thanks, Ben > > > Kind regards, > > Paul > -- Ben Greear Candela Technologies Inc http://www.candelatech.com