netdev - Re: Marvell switch port shows LOWERLAYERDOWN, ping fails

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 for Android: free password hash cracker in your pocket

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

Message-ID: <bcd589bd-eeb4-478c-127b-13f613fdfebc@helixd.com>
Date:   Sat, 24 Jul 2021 19:36:29 -0700
From:   Dario Alcocer <dalcocer@...ixd.com>
To:     Andrew Lunn <andrew@...n.ch>
Cc:     netdev@...r.kernel.org
Subject: Re: Marvell switch port shows LOWERLAYERDOWN, ping fails

On 7/24/21 7:26 PM, Dario Alcocer wrote:
> On 7/24/21 10:34 AM, Andrew Lunn wrote:
>> You might want to enable dbg prints in driver/nets/phy/phy.c, so you
>> can see the state machine changes.
>
> Great suggestion. I added the following to the boot options:
>
> dyndbg="file net/dsa/* +p; file drivers/net/phy/phy.c +p"
>
> The relevant messages collected from the system log are below. 
> Interestingly, all of the ports go from UP to NOLINK. In addition, 
> "breaking chain for DSA event 7" is reported, once for each port.
>
> I'll dig into the DSA sources to see the significance of event 7. 

Event 7 is DSA_NOTIFIER_VLAN_ADD, found in net/dsa/dsa_priv.h