tx v2 error 0x6204<UNDERFLOW> - is this a new feature?

Tue Jan 11 09:14:50 UTC 2011

On Tue, January 11, 2011 1:01 am, fbsdmail at dnswatch.com wrote:
>

> On Tue, January 11, 2011 12:42 am, Pyun YongHyeon wrote:
>
>> On Tue, Jan 11, 2011 at 12:28 AM,  <fbsdmail at dnswatch.com> wrote:
>>
>>
>>> Greetings Pyun YongHyeon, and thank you for your reply.
>>> On Mon, January 10, 2011 11:40 pm, Pyun YongHyeon wrote:
>>>
>>>
>>>> On Mon, Jan 10, 2011 at 11:10 PM,  <fbsdmail at dnswatch.com> wrote:
>>>>
>>>>
>>>>
>>>>> Greetings,
>>>>> I have been receiving these messages on a recent 8.1/AMD64
>>>>> install. src/ports && world/kern about a week ago. Here is a block
>>>>> from the most recent output: nfe0: tx v2 error 0x6204<UNDERFLOW>
>>>>> nfe0: tx v2
>>>>> error 0x6204<UNDERFLOW>
>>
>> [...]
>>
>>
>>
>>>>> nfe0: tx v2 error 0x6204<UNDERFLOW>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> It appears to only occur when transmitting largish amounts of
>>>>> data across an NFS mount. I'm not sure where the MIN-threshold
>>>>> lies. But appears to be >=1.5Mb. This fresh 8.1/AMD64 is part of a
>>>>> largish server farm comprised of 7+ - 8.0 i386 servers. This one
>>>>> is the only AMD64. It
>>>>> is also the only AMD64. I experience this when mounting an
>>>>> 8.0/i386
>>>>> server from this 8.1/AMD64. The i386 also has mounts on this
>>>>> 8.1/AMD64.
>>>>> relevant info: ### 8.0/i386 8.0-STABLE FreeBSD 8.0-STABLE #0:
>>>>> /usr/obj/usr/src/sys/UDNS01  i386
>>>>> Tyan 2-CPU MB
>>>>> 2 NIC's: fxp0 (only one in use)
>>>>> ### 8.1/AMD64
>>>>> FreeBSD 8.1-RELEASE-p2 #0: /usr/obj/usr/src/sys/XII amd64
>>>>> MSI K9N4 Ultra
>>>>> CPU: AMD Athlon(tm) 64 X2 Dual Core Processor 4200+ (3511.34-MHz
>>>>> K8-class
>>>>> CPU)
>>>>> 1 NIC nfe0
>>>>> ### common to both:
>>>>> rc.conf nfs_client_enable="YES" nfs_reserved_port_only="YES"
>>>>> nfs_server_enable="YES"
>>>>>
>>>>> NIC's on both boards are 10/100's @100mbps
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> Can anyone provide any insight as to why I should be receiving
>>>>> these messages on a fresh 8.1/amd64 install. Is 8.1 INcompatible
>>>>> with earlier versions?
>>>>>
>>>>
>>>> No, I guess you're seeing one of unresolved nfe(4) issues.
>>>> By chance, are you using forced media configuration instead of
>>>> auto-negotiation? Posting both dmesg and "ifconfig nfe0" output
>>>> would be useful.
>>>
>>> As dmesg(8) goes, I have no dmesg.boot on either box, and bouncing
>>> them is not an immediate option.
>>>
>>> ifconfig nfe0 (the 8.1/amd64) follows: # ifconfig nfe0 nfe0:
>>> flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
>>> options=8010b<RXCSUM,TXCSUM,VLAN_MTU,TSO4,LINKSTATE> ether
>>> 00:19:db:22:74:87
>>> inet XXX.XXX.XXX.26 netmask 0xffffffe0 broadcast XXX.XXX.XXX.31 inet6
>>> fe80::219:dbff:fe22:7487%nfe0 prefixlen 64 scopeid 0x1
>>> nd6 options=3<PERFORMNUD,ACCEPT_RTADV> media: Ethernet autoselect
>>> (100baseTX <half-duplex>)
>>>
>>>
>>
>> Does the link partner also agree on the resolved duplex(half-duplex)?
>> It's not common to see half-duplex in these days.
>> Please make sure link partner is also using auto-negotiation.
>>
>>
>
> I thought that odd, as well. Both kerns have as nearly the same options
> as is possible. Because the 8.1/amd64 is intended as a replacement for the
> 8.0/i386. They're both on the same switch.

OK. Sorry, it just occurred to me that they /aren't/ both 10/100's
The 8.1/amd64 (nfe0) is 10/100/1000, which might account for the half-dup.
Just thought I'd mention it - but I'm sure you already discovered that :P

>
>
>>
>>> status: active
>>>
>>>
>>>
>>> FWIW ifconfig fxp0 on the 8.0/i386 follows:
>>> # ifconfig fxp0
>>> fxp0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu
>>> 1500
>>> options=2009<RXCSUM,VLAN_MTU,WOL_MAGIC> ether 00:e0:81:20:9d:66 inet
>>> XXX.XXX.XXX.20 netmask 0xffffffe0 broadcast XXX.XXX.XXX.31
>>> inet XXX.XXX.XXX.21 netmask 0xffffffff broadcast XXX.XXX.XXX.21 inet
>>> XXX.XXX.XXX.22 netmask 0xffffffff broadcast XXX.XXX.XXX.22
>>> inet XXX.XXX.XXX.23 netmask 0xffffffff broadcast XXX.XXX.XXX.23 inet
>>> XXX.XXX.XXX.24 netmask 0xffffffff broadcast XXX.XXX.XXX.24
>>> inet XXX.XXX.XXX.25 netmask 0xffffffff broadcast XXX.XXX.XXX.25 media:
>>>  Ethernet autoselect (100baseTX)
>>> status: active
>>>
>>>
>>>
>>> They're all on the same /24, and as you can see, there is no
>>> forced media configuration.
>>>
>>> I /do/ have an old (pre-kern-build) dmesg.boot for the 8.1/amd64, if
>>> you (or anyone else) thinks it would help. If the dmesg.boot is
>>> absolutely required, I'll schedule an opportunity to bounce both of
>>> them - I'll need to know, tho.
>>>
>>>
>>>
>>
>> Then show me the output of  "devinfo -rv" and "pciconf -lcbv".
>>
>
> Sorry, my bad. I forgot that there would be a copy of dmesg.boot in
> /var/run/.
>
>
> dmesg.boot.udns0 = 8.1/amd64 dmesg.boot.udns = 8.0/i386
>
> My mailer is acting up, or I would simply attach them. So in the meantime
>  they can be found here:
>
> https://dnswatch.com/_tmp/dmesg.boot.udns0
> and here: https://dnswatch.com/_tmp/dmesg.boot.udns
>
>
> Thanks again.
>
>
> --Chris
>
>
>>
>>
>>> Thank you again for your thoughtful reply.
>>>
>>>
>>>
>>> --Chris
>>>
>>>
>>>
>>>
>>>>
>>>>> Thank you for all your time and consideration.
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> --Chris
>>>>>
>>>>>
>>>>>
>>>> _______________________________________________
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>>>>
>>>>
>>>>
>>>>
>>>
>>>
>>> --
>>> kern:
>>> FreeBSD 8.1-RELEASE amd64
>>>
>>>
>>>
>>>
>>>
>> _______________________________________________
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>> To unsubscribe, send any mail to "freebsd-amd64-unsubscribe at freebsd.org"
>>
>>
>>
>
>
> --
> kern:
> FreeBSD 8.1-RELEASE amd64
>
>
>
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>
>

-- 
kern:
FreeBSD 8.1-RELEASE amd64