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

fbsdmail at dnswatch.com fbsdmail at dnswatch.com
Tue Jan 11 08:28:08 UTC 2011 

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>
>> nfe0: tx v2 error 0x6204<UNDERFLOW>
>> nfe0: tx v2 error 0x6204<UNDERFLOW>
>> nfe0: tx v2 error 0x6204<UNDERFLOW>
>> nfe0: tx v2 error 0x6204<UNDERFLOW>
>> nfe0: tx v2 error 0x6204<UNDERFLOW>
>> nfe0: tx v2 error 0x6204<UNDERFLOW>
>> nfe0: tx v2 error 0x6204<UNDERFLOW>
>> nfe0: tx v2 error 0x6204<UNDERFLOW>
>> nfe0: tx v2 error 0x6204<UNDERFLOW>
>> nfe0: tx v2 error 0x6204<UNDERFLOW>
>> nfe0: tx v2 error 0x6204<UNDERFLOW>
>> nfe0: tx v2 error 0x6204<UNDERFLOW>
>> nfe0: tx v2 error 0x6204<UNDERFLOW>
>> nfe0: tx v2 error 0x6204<UNDERFLOW>
>> nfe0: tx v2 error 0x6204<UNDERFLOW>
>> nfe0: tx v2 error 0x6204<UNDERFLOW>
>> nfe0: tx v2 error 0x6204<UNDERFLOW>
>> nfe0: tx v2 error 0x6204<UNDERFLOW>
>> nfe0: tx v2 error 0x6204<UNDERFLOW>
>> nfe0: tx v2 error 0x6204<UNDERFLOW>
>> nfe0: tx v2 error 0x6204<UNDERFLOW>
>> nfe0: tx v2 error 0x6204<UNDERFLOW>
>> nfe0: tx v2 error 0x6204<UNDERFLOW>
>> nfe0: tx v2 error 0x6204<UNDERFLOW>
>> nfe0: tx v2 error 0x6204<UNDERFLOW>
>> nfe0: tx v2 error 0x6204<UNDERFLOW>
>> nfe0: tx v2 error 0x6204<UNDERFLOW>
>> nfe0: tx v2 error 0x6204<UNDERFLOW>
>> nfe0: tx v2 error 0x6204<UNDERFLOW>
>> nfe0: tx v2 error 0x6204<UNDERFLOW>
>> nfe0: tx v2 error 0x6204<UNDERFLOW>
>> nfe0: tx v2 error 0x6204<UNDERFLOW>
>> nfe0: tx v2 error 0x6204<UNDERFLOW>
>> nfe0: tx v2 error 0x6204<UNDERFLOW>
>> nfe0: tx v2 error 0x6204<UNDERFLOW>
>> nfe0: tx v2 error 0x6204<UNDERFLOW>
>> nfe0: tx v2 error 0x6204<UNDERFLOW>
>> nfe0: tx v2 error 0x6204<UNDERFLOW>
>> nfe0: tx v2 error 0x6204<UNDERFLOW>
>> nfe0: tx v2 error 0x6204<UNDERFLOW>
>> nfe0: tx v2 error 0x6204<UNDERFLOW>
>> nfe0: tx v2 error 0x6204<UNDERFLOW>
>> nfe0: tx v2 error 0x6204<UNDERFLOW>
>> nfe0: tx v2 error 0x6204<UNDERFLOW>
>> nfe0: tx v2 error 0x6204<UNDERFLOW>
>> nfe0: tx v2 error 0x6204<UNDERFLOW>
>> nfe0: tx v2 error 0x6204<UNDERFLOW>
>> nfe0: tx v2 error 0x6204<UNDERFLOW>
>> nfe0: tx v2 error 0x6204<UNDERFLOW>
>> nfe0: tx v2 error 0x6204<UNDERFLOW>
>> nfe0: tx v2 error 0x6204<UNDERFLOW>
>> nfe0: tx v2 error 0x6204<UNDERFLOW>
>> nfe0: tx v2 error 0x6204<UNDERFLOW>
>> nfe0: tx v2 error 0x6204<UNDERFLOW>
>> nfe0: tx v2 error 0x6204<UNDERFLOW>
>> nfe0: tx v2 error 0x6204<UNDERFLOW>
>> nfe0: tx v2 error 0x6204<UNDERFLOW>
>> nfe0: tx v2 error 0x6204<UNDERFLOW>
>> nfe0: tx v2 error 0x6204<UNDERFLOW>
>> nfe0: tx v2 error 0x6204<UNDERFLOW>
>> nfe0: tx v2 error 0x6204<UNDERFLOW>
>> nfe0: tx v2 error 0x6204<UNDERFLOW>
>> nfe0: tx v2 error 0x6204<UNDERFLOW>
>> nfe0: tx v2 error 0x6204<UNDERFLOW>
>> nfe0: tx v2 error 0x6204<UNDERFLOW>
>> nfe0: tx v2 error 0x6204<UNDERFLOW>
>> 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>)
        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.

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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