Bug#927825: arm: mvneta driver used on Armada XP GP boards does not receive packets (regression from 4.9)

From	Aurelien Jarno <aurel32@debian.org>
Newsgroups	linux.debian.bugs.dist, linux.debian.kernel
Subject	Bug#927825: arm: mvneta driver used on Armada XP GP boards does not receive packets (regression from 4.9)
Date	2019-05-01 22:40 +0200
Message-ID	<xT4bf-M6-1@gated-at.bofh.it> (permalink)
References	(4 earlier) <xQSed-1ye-3@gated-at.bofh.it> <xSwsV-56l-1@gated-at.bofh.it> <xSJ6N-4Dw-1@gated-at.bofh.it> <xQadb-8um-5@gated-at.bofh.it> <xSJ6N-4Dw-1@gated-at.bofh.it>
Organization	linux.* mail to news gateway

Cross-posted to 2 groups.

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Hi,

On 2019-05-01 00:04, Aurelien Jarno wrote:
> On 2019-04-30 10:12, Uwe Kleine-König wrote:
> > > > More precisely the board is a "Marvell Armada XP Development Board
> > > > DB-MV784MP-GP"
> > > > 
> > > > > anymore. Using tcpdump on both the buildd and a remote host, it appears
> > > > > that the packets correctly leave the board and that the reception side
> > > > > fails.
> > 
> > If you can send to a remote host at least ARP (or ND) must be working,
> > so some reception still works, right?
> 
> I have to try again, but what i have seen is the ARP requests from
> hartmann arriving to the other hosts on the subnet. Steve McIntyre
> (added in Cc:) confirmed me on IRC being able to reproduce the issue on
> another board.

I confirm that. Basically on the other hosts of the same subnet, I can
see the ARP requests:

18:23:45.979860 ARP, Request who-has 172.28.17.1 tell 172.28.17.18, length 46
18:23:47.002990 ARP, Request who-has 172.28.17.1 tell 172.28.17.18, length 46
18:23:48.027262 ARP, Request who-has 172.28.17.1 tell 172.28.17.18, length 46
18:23:52.004248 ARP, Request who-has 172.28.17.1 tell 172.28.17.18, length 46
18:23:53.019252 ARP, Request who-has 172.28.17.1 tell 172.28.17.18, length 46
18:23:54.043276 ARP, Request who-has 172.28.17.1 tell 172.28.17.18, length 46
18:23:58.027937 ARP, Request who-has 172.28.17.1 tell 172.28.17.18, length 46

172.28.17.1 is the gateway, 172.28.17.18 is hartmann.d.o. 

> > Is it possible to test a few things on hartmann? I'd suggest:
> > 
> >  - try (vanilla) 5.1-rc6 with MVNETA=y

I have tried 5.1-rc7 with:

CONFIG_MVNETA_BM_ENABLE=y
CONFIG_MVNETA=y
CONFIG_MVNETA_BM=y

and also with

CONFIG_MVNETA_BM_ENABLE=m
CONFIG_MVNETA=m
CONFIG_MVNETA_BM=m

And the mvneta network driver is not able to receive data in both cases.

Best regards,
Aurelien

-- 
Aurelien Jarno                          GPG: 4096R/1DDD8C9B
aurelien@aurel32.net                 http://www.aurel32.net

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Bug#927825: arm: mvneta driver used on Armada XP GP boards does not receive packets (regression from 4.9) Aurelien Jarno <aurel32@debian.org> - 2019-04-23 22:30 +0200
  Bug#927825: arm: mvneta driver used on Armada XP GP boards does not receive packets (regression from 4.9) Aurelien Jarno <aurel32@debian.org> - 2019-04-25 15:00 +0200
  Bug#927825: arm: mvneta driver used on Armada XP GP boards does not receive packets (regression from 4.9) Uwe Kleine-König <uwe@kleine-koenig.org> - 2019-04-30 10:40 +0200
  Bug#927825: arm: mvneta driver used on Armada XP GP boards does not receive packets (regression from 4.9) Aurelien Jarno <aurel32@debian.org> - 2019-05-01 22:40 +0200

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