From: Rafa Corvillo <rafael.corvillo@aoifes•com>
To: Stephen Hemminger <stephen@networkplumber•org>
Cc: netdev@vger•kernel.org
Subject: Re: [ISSUE: sky2 - rx error] Link stops working under heavy traffic load connected to a mv88e6176
Date: Thu, 27 Apr 2017 14:05:51 +0200 [thread overview]
Message-ID: <5901DE9F.1070005@aoifes.com> (raw)
In-Reply-To: <20170425082741.59428876@xeon-e3>
On 25/04/17 17:27, Stephen Hemminger wrote:
> On Fri, 21 Apr 2017 14:39:00 +0200
> Rafa Corvillo <rafael.corvillo@aoifes•com> wrote:
>
>> We are working in an ARMv7 embedded system running kernel 4.9 (LEDE build).
>> It is an imx6 board with 2 ethernet interfaces. One of them is connected to
>> a Marvell switch.
>>
>> The schema of the system is the following:
>>
>> +-------------------+ eth0
>> | +--+
>> | | |
>> | Embedded system +--+
>> | |
>> | ARMv7 |
>> | | Marvell 88E8057(sky2) +-------------+
>> | +--+ +--+ +--+ eth1
>> | | +---------------------+ | | +------+
>> | +--+ CPU port +--+ mv88e6176 +--+
>> +------+--+---------+ | |
>> emulated| | | |
>> GPIO +--+ +--+ +--+ eth2
>> MDIO +-----------------------------------+ | | +------+
>> MDIO +--+ +--+
>> +-------------+
>>
>> There is a bridge (br-lan) which includes eth0/eth1/eth2
>>
>> If I connect the eth1/eth2, the link is up and I can do ping through it.
>> But, once
>> I start sending a heavy traffic load the link fails and the kernel sends the
>> following messages:
>>
>> [ 48.557140] sky2 0000:04:00.0 marvell: rx error, status 0x5f20010
>> length 1518
>> [ 48.564964] sky2 0000:04:00.0 marvell: rx error, status 0x5f20010
>> length 1518
>> [ 48.572110] sky2 0000:04:00.0 marvell: rx error, status 0x5f20010
>> length 1518
>> [ 48.579263] sky2 0000:04:00.0 marvell: rx error, status 0x5f20010
>> length 1518
>> [ 48.586417] sky2 0000:04:00.0 marvell: rx error, status 0x5f20010
>> length 1518
>> [ 48.593573] sky2 0000:04:00.0 marvell: rx error, status 0x5f20010
>> length 1518
>> [ 48.600718] sky2 0000:04:00.0 marvell: rx error, status 0x5f20010
>> length 1518
>> [ 54.877567] net_ratelimit: 6 callbacks suppressed
>> [ 54.882293] sky2 0000:04:00.0 marvell: rx error, status 0x5f20010
>> length 1518
>> [ 61.413552] sky2 0000:04:00.0 marvell: rx error, status 0x5f20010
>> length 1518
>
> The status error bits are in sky2.h
> 0x5f20010 is
> 05f2 frame length => 1522
> 0010 Too long err
>
> That means the packet was longer than the configured MTU.
> You are probably getting packets with VLAN tag but have not configured
> a VLAN.
>
>
>
Thanks for the information. I have increased the MTU value to 1550
(workaround) and it works if sends traffic (with iperf) from my computer
to the unit. But, if I send traffic outside the unit, I get a new error
message and link goes down:
[ 4901.032989] sky2 0000:04:00.0 marvell: tx timeout
[ 4904.722670] sky2 0000:04:00.0 marvell: Link is up at 1000 Mbps, full
duplex, flow control both
Rafa
next prev parent reply other threads:[~2017-04-27 12:05 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-04-21 12:39 [ISSUE: sky2 - rx error] Link stops working under heavy traffic load connected to a mv88e6176 Rafa Corvillo
2017-04-24 6:45 ` Rafa Corvillo
2017-04-25 15:27 ` Stephen Hemminger
2017-04-27 12:05 ` Rafa Corvillo [this message]
2017-04-27 13:04 ` Andrew Lunn
2017-04-28 11:54 ` Rafa Corvillo
2017-04-28 12:22 ` Andrew Lunn
2017-05-08 12:03 ` Rafa Corvillo
2017-05-08 12:38 ` Andrew Lunn
2017-05-16 10:50 ` Rafa Corvillo
2017-05-16 12:47 ` Andrew Lunn
2017-05-16 13:09 ` Rafa Corvillo
2017-05-16 13:21 ` Andrew Lunn
2017-05-16 15:50 ` Rafa Corvillo
2017-05-16 15:58 ` Andrew Lunn
2017-05-16 16:19 ` Rafa Corvillo
2017-05-26 10:13 ` Rafa Corvillo
2017-05-31 19:31 ` Andrew Lunn
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