From: Ben Greear <greearb@candelatech.com>
To: intel-wired-lan@osuosl.org
Subject: [Intel-wired-lan] 5.10.0 kernel regression for 2.5Gbps link negotiation?
Date: Fri, 18 Dec 2020 15:07:06 -0800 [thread overview]
Message-ID: <c54c8f2c-a295-c691-466e-07ae8f41b0ac@candelatech.com> (raw)
In-Reply-To: <3bcba0ca-8f3b-8428-861a-86aaff1688b6@molgen.mpg.de>
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 <ethX> 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 <ethX> 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 <radoslawx.tyl@intel.com>
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 <radoslawx.tyl@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Thanks,
Ben
>
>
> Kind regards,
>
> Paul
>
--
Ben Greear <greearb@candelatech.com>
Candela Technologies Inc http://www.candelatech.com
next prev parent reply other threads:[~2020-12-18 23:07 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-18 18:08 [Intel-wired-lan] 5.10.0 kernel regression for 2.5Gbps link negotiation? Ben Greear
2020-12-18 19:27 ` Fujinaka, Todd
2020-12-18 19:41 ` Ben Greear
2020-12-18 19:43 ` Paul Menzel
2020-12-18 23:07 ` Ben Greear [this message]
2020-12-18 23:19 ` Paul Menzel
2020-12-19 0:09 ` Fujinaka, Todd
2020-12-19 0:47 ` Ben Greear
2020-12-19 16:19 ` Fujinaka, Todd
2020-12-19 16:48 ` Ben Greear
2020-12-21 15:20 ` Fujinaka, Todd
2020-12-21 15:52 ` Ben Greear
2020-12-21 15:58 ` Fujinaka, Todd
2020-12-21 16:04 ` Ben Greear
2020-12-22 8:59 ` Greg KH
2020-12-21 15:09 ` [Intel-wired-lan] ixgbe: " Paul Menzel
2020-12-21 15:16 ` Fujinaka, Todd
2020-12-21 15:31 ` Hisashi T Fujinaka
2020-12-19 7:54 ` Paul Menzel
2020-12-19 16:07 ` Fujinaka, Todd
2020-12-19 20:59 ` Linus Torvalds
2020-12-21 15:12 ` Fujinaka, Todd
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