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From: Dario Alcocer <dalcocer@helixd.com>
To: Andrew Lunn <andrew@lunn.ch>
Cc: netdev@vger.kernel.org
Subject: Re: Marvell switch port shows LOWERLAYERDOWN, ping fails
Date: Sat, 24 Jul 2021 19:36:29 -0700	[thread overview]
Message-ID: <bcd589bd-eeb4-478c-127b-13f613fdfebc@helixd.com> (raw)
In-Reply-To: <f8ee6413-9cf5-ce07-42f3-6cc670c12824@helixd.com>

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


  reply	other threads:[~2021-07-25  2:36 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-22 22:55 Dario Alcocer
2021-07-23 13:41 ` Andrew Lunn
2021-07-23 18:21   ` Dario Alcocer
2021-07-23 18:25     ` Andrew Lunn
2021-07-23 18:36       ` Dario Alcocer
2021-07-23 21:58         ` Dario Alcocer
2021-07-24 17:34           ` Andrew Lunn
2021-07-25  2:26             ` Dario Alcocer
2021-07-25  2:36               ` Dario Alcocer [this message]
2021-07-27  1:39                 ` Dario Alcocer
2021-07-28 18:07                   ` Dario Alcocer
2021-07-28 18:23                     ` Andrew Lunn
2021-07-28 18:33                       ` Dario Alcocer
2021-07-28 19:24                         ` Andrew Lunn
2021-07-28 19:37                           ` Dario Alcocer
2021-07-28 20:47                             ` Andrew Lunn
2021-07-28 20:54                               ` Dario Alcocer
2021-07-28 21:09                             ` Andrew Lunn
2021-08-05 21:44                             ` Dario Alcocer
2021-08-06 16:03                               ` Dario Alcocer
2021-08-06 23:46                                 ` Dario Alcocer
2021-08-07 18:57                                   ` Andrew Lunn
2021-08-09 16:28                                     ` Dario Alcocer
2021-08-10 20:58                                       ` Dario Alcocer
2021-08-10 22:13                                         ` Andrew Lunn
2021-08-11 13:16                                           ` Dario Alcocer
2021-08-07 17:44                               ` Andrew Lunn

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