netdev - Re: Waiting for the PHY to complete auto-negotiation

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:   Mon, 11 Dec 2017 15:47:54 +0100
From:   Mason <slash.tmp@...e.fr>
To:     Mans Rullgard <mans@...sr.com>
Cc:     Florian Fainelli <f.fainelli@...il.com>,
        Andrew Lunn <andrew@...n.ch>, netdev <netdev@...r.kernel.org>,
        David Miller <davem@...emloft.net>
Subject: Re: Waiting for the PHY to complete auto-negotiation

On 11/12/2017 15:36, Måns Rullgård wrote:

> Mason writes:
> 
>> I suppose I should test forcefully setting the enable bit to 0 in
>> the driver, and see if hell breaks loose.
> 
> You can't.  When the enable bit is 1, writes to that register are
> ignored.  It goes back to 0 automatically when the hw runs out of
> descriptors.

I don't think they are ignored, because toggling the control flow
bit actually breaks RX.

Regards.