Re: Packet Corruption with Atheros Communications Inc. AR8121/AR8113/AR8114 Gigabit or Fast Ethernet (rev b0) Interface

On Wed, 2012-11-21 at 15:54 +0100, Martin Tessun wrote:

Hi @all,

unfortunately I don't have the old postings any more, so I start a new 
thread.

Following situation:

I have a Server (NFS) and a Client with the Atheros network card. If I 
transfer big files, the md5sum of these files differ.
If I try to scp the file I get "MAC corrupted on inpu".

Everything works fine, if running on any other OS (or with other NICs 
than the Atheros one).

So here is the data:

lspci:
02:00.0 Ethernet controller: Atheros Communications Inc. 
AR8121/AR8113/AR8114 Gigabit or Fast Ethernet (rev b0)
         Subsystem: ASUSTeK Computer Inc. Device 831c
         Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- 
ParErr- Stepping- SERR+ FastB2B- DisINTx+
         Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- 
<TAbort- <MAbort- >SERR- <PERR- INTx-
         Latency: 0, Cache Line Size: 64 bytes
         Interrupt: pin A routed to IRQ 44
         Region 0: Memory at fbec0000 (64-bit, non-prefetchable) [size=256K]
         Region 2: I/O ports at dc00 [size=128]
         Capabilities: [40] Power Management version 2
                 Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA 
PME(D0-,D1-,D2-,D3hot+,D3cold+)
                 Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
         Capabilities: [48] MSI: Enable+ Count=1/1 Maskable- 64bit+
                 Address: 00000000fee0f00c  Data: 4181
         Capabilities: [58] Express (v1) Endpoint, MSI 00
                 DevCap: MaxPayload 4096 bytes, PhantFunc 0, Latency L0s 
<4us, L1 unlimited
                         ExtTag- AttnBtn+ AttnInd+ PwrInd+ RBE- FLReset-
                 DevCtl: Report errors: Correctable- Non-Fatal- Fatal- 
Unsupported-
                         RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop-
                         MaxPayload 128 bytes, MaxReadReq 512 bytes
                 DevSta: CorrErr- UncorrErr+ FatalErr- UnsuppReq+ 
AuxPwr+ TransPend-
                 LnkCap: Port #0, Speed 2.5GT/s, Width x1, ASPM L0s, 
Latency L0 unlimited, L1 unlimited
                         ClockPM- Surprise- LLActRep- BwNot-
                 LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- Retrain- 
CommClk+
                         ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
                 LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ 
DLActive- BWMgmt- ABWMgmt-
         Capabilities: [100 v1] Advanced Error Reporting
                 UESta:  DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt+ 
UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq+ ACSViol-
                 UEMsk:  DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- 
UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
                 UESvrt: DLP+ SDES- TLP- FCP+ CmpltTO- CmpltAbrt- 
UnxCmplt- RxOF+ MalfTLP+ ECRC- UnsupReq- ACSViol-
                 CESta:  RxErr- BadTLP- BadDLLP- Rollover- Timeout- 
NonFatalErr-
                 CEMsk:  RxErr- BadTLP- BadDLLP- Rollover- Timeout- 
NonFatalErr-
                 AERCap: First Error Pointer: 14, GenCap+ CGenEn- 
ChkCap+ ChkEn-
         Capabilities: [180 v1] Device Serial Number ff-76-f8-79-00-26-18-ff
         Kernel driver in use: ATL1E


$ ethtool -k eth0
Offload parameters for eth0:
rx-checksumming: off
tx-checksumming: on
scatter-gather: on
tcp-segmentation-offload: on
udp-fragmentation-offload: off
generic-segmentation-offload: on
generic-receive-offload: on
large-receive-offload: off
rx-vlan-offload: on
tx-vlan-offload: on
ntuple-filters: off
receive-hashing: off


SCP initiated on client:
$ scp server:/export/no_backup/burn/openSUSE-12.2-DVD-x86_64.iso .
openSUSE-12.2-DVD-x86_64.iso 
 
                                                               1%   88MB 
   9.8MB/s   07:26 ETA
Corrupted MAC on input.
Disconnecting: Packet corrupt
lost connection

SCP initiated on server:
$ scp /export/no_backup/burn/openSUSE-12.2-DVD-x86_64.iso client:/tmp
Enter passphrase for key '/home/chewie/tessun/.ssh/id_rsa':
openSUSE-12.2-DVD-x86_64.iso 
 
                                                               5%  229MB 
   7.0MB/s   10:00 ETA
Received disconnect from 2a01:198:366:100::fba5: 2: Packet corrupt
lost connection


ifconfig-output (Client):
           RX packets:773481 errors:0 dropped:7620 overruns:0 frame:0
           TX packets:589594 errors:0 dropped:0 overruns:0 carrier:1
           collisions:0 Sendewarteschlangenlänge:1000
           RX bytes:596932088 (569.2 Mb)  TX bytes:90583584 (86.3 Mb)
           Interrupt:44

ifconfig-Output (Server):
           RX packets:11579837 errors:0 dropped:0 overruns:0 frame:0
           TX packets:19734057 errors:0 dropped:0 overruns:0 carrier:0
           collisions:0 txqueuelen:1000
           RX bytes:2717120721 (2591.2 Mb)  TX bytes:22047372376 
(21026.0 Mb)
           Interrupt:42 Base address:0xc000


As said: Other NICs than the Atheros work fine.

If you need additional Infos (tcpdumps, etc.) please let me know.

Regards,
Martin

Is it only happening for IPv6 traffic, or is it also buggy for IPv4 ?

If you disable tso , does the bug disappear ?