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:   Wed, 18 Jan 2017 09:02:44 -0600
From:   Timur Tabi <timur@...eaurora.org>
To:     Zefir Kurtisi <zefir.kurtisi@...atec.com>, netdev@...r.kernel.org
Cc:     andrew@...n.ch, f.fainelli@...il.com
Subject: Re: [PATCH 2/2] at803x: double check SGMII side autoneg

On 01/18/2017 07:53 AM, Zefir Kurtisi wrote:
> No, not necessarily. The SGMII link default configuration is set such that you do
> not have to bother at all.

Does the SGMII link need to make the speed and duplex of the external link?

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/drivers/net/ethernet/qualcomm/emac/emac-sgmii.c#n50

Here is where I can configure the SGMII link to match whatever phydev says 
the external link is.  This is code that was handed down to me.  I've never 
really understood what the purpose was.  Shouldn't I just be able to 
configure the SGMII link to 1Gbs full-duplex, regardless of what the external 
link is set to?

> That is, if in your case you see the warning popping up but the link always
> regains connection, then it is an ignorable false positive.

Unfortunately, I can't really ignore it because genphy does this:

$ ifup eth1
[ 1034.754276] qcom-emac QCOM8070:00 eth1: Link is Up - 1Gbps/Full - flow 
control rx/tx

But the at803x driver does this:

$ ifup eth1
[ 1020.507728] 803x_aneg_done: SGMII link is not ok
[ 1020.513517] qcom-emac QCOM8070:00 eth1: Link is Up - 1Gbps/Full - flow 
control rx/tx
[ 1020.522839] qcom-emac QCOM8070:00 eth1: Link is Up - 1Gbps/Full - flow 
control rx/tx

Customers are going to complain.

-- 
Qualcomm Datacenter Technologies, Inc. as an affiliate of Qualcomm
Technologies, Inc.  Qualcomm Technologies, Inc. is a member of the
Code Aurora Forum, a Linux Foundation Collaborative Project.

Powered by blists - more mailing lists