netdev - Re: status of rate adaptation

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Fri, 11 Nov 2022 15:57:23 -0500
From:   Sean Anderson <sean.anderson@...o.com>
To:     Tim Harvey <tharvey@...eworks.com>,
        netdev <netdev@...r.kernel.org>,
        Russell King <linux@...linux.org.uk>,
        "David S. Miller" <davem@...emloft.net>
Subject: Re: status of rate adaptation

Hi Tim,

On 11/11/22 15:44, Tim Harvey wrote:
> Greetings,
> 
> I've noticed some recent commits that appear to add rate adaptation support:
> 3c42563b3041 net: phy: aquantia: Add support for rate matching
> 7de26bf144f6 net: phy: aquantia: Add some additional phy interfaces
> b7e9294885b6 net: phylink: Adjust advertisement based on rate matching
> ae0e4bb2a0e0 net: phylink: Adjust link settings based on rate matching
> 0c3e10cb4423 net: phy: Add support for rate matching
> 
> I have a board with an AQR113C PHY over XFI that functions properly at
> 10Gbe links but still not at 1Gbe,2.5Gbe,5.0Gbe,100M with v6.1-rc4
> 
> Should I expect this to work now at those lower rates

Yes.

> and if so what kind of debug information or testing can I provide?

Please send

- Your test procedure (how do you select 1G?)
- Device tree node for the interface
- Output of ethtool (on both ends if possible).
- Kernel logs with debug enabled for drivers/phylink.c

That should be enough to get us started.

--Sean