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Date: Wed, 20 Feb 2013 12:52:41 +0100
From: Ralf Friedl <Ralf.Friedl@...ine.de>
To: netdev@...r.kernel.org
Subject: Problem with Reaktek 8168
Hi
I have a problem with the Reaktek 8168 on two Asus mainboards, the M5A97
LE R2.0 and the M5A97 EVO R2.0.
Sporadically, but especially when I transmit larger amounts of data, the
driver stops receiving packets from the network. I can verify with
tcpdump that packets sent from the driver reach the network, but packets
(answers) sent from the network don't read the driver.
I have opensuse 12.2 installed on both systems. With the supplied r8169
driver, this effect would happen within a few seconds when transferring
large files between two systems with gigabit ethernet. I the found and
compiled the r8168 driver. With this driver it is much better, but it
happens occasionally anyway. I can fix this by reloading the driver, or
by rebinding the driver with
echo 0000:02:00.0 > /sys/bus/pci/drivers/r8168/unbind
echo 0000:02:00.0 > /sys/bus/pci/drivers/r8168/bind
So to me it seems to be a software issue, especially as this happens on
two different boards. Unfortunately both reloading and rebinding take a
few seconds to reestablish the network link, and first it is necessary
to detect that the driver can't receive packets any more.
Is this a known problem?
If so, is there a known way to fix it?
If not, what additional information can I provide to fix it? Are there
any interesting debug settings?
Is there as a workaround a faster way to reinitialize the driver?
If it helps I can also run a custom driver with additional debug code.
Regards
Ralf Friedl
Additional information:
modinfo r8168 (downloaded from the Realtek site):
filename:
/lib/modules/3.4.28-2.20-default/kernel/drivers/net/ethernet/realtek/r8168.ko
version: 8.035.00-NAPI
license: GPL
description: RealTek RTL-8168 Gigabit Ethernet driver
author: Realtek and the Linux r8168 crew <netdev@...r.kernel.org>
srcversion: C7041A3D9074A1575512C13
alias: pci:v00001186d00004300sv00001186sd00004B10bc*sc*i*
alias: pci:v000010ECd00008168sv*sd*bc*sc*i*
depends:
vermagic: 3.4.28-2.20-default SMP mod_unload modversions
parm: eee_enable:int
parm: speed:force phy operation. Deprecated by ethtool (8).
(ushort)
parm: duplex:force phy operation. Deprecated by ethtool (8). (int)
parm: autoneg:force phy operation. Deprecated by ethtool (8).
(int)
parm: aspm:Enable ASPM. (int)
parm: rx_copybreak:Copy breakpoint for copy-only-tiny-frames (int)
parm: use_dac:Enable PCI DAC. Unsafe on 32 bit PCI slot. (int)
parm: debug:Debug verbosity level (0=none, ..., 16=all) (int)
modinfo r8169 (from opensuse):
filename:
/lib/modules/3.4.28-2.20-default/kernel/drivers/net/ethernet/realtek/r8169.ko
firmware: rtl_nic/rtl8168f-2.fw
firmware: rtl_nic/rtl8168f-1.fw
firmware: rtl_nic/rtl8105e-1.fw
firmware: rtl_nic/rtl8168e-3.fw
firmware: rtl_nic/rtl8168e-2.fw
firmware: rtl_nic/rtl8168e-1.fw
firmware: rtl_nic/rtl8168d-2.fw
firmware: rtl_nic/rtl8168d-1.fw
version: 2.3LK-NAPI
license: GPL
description: RealTek RTL-8169 Gigabit Ethernet driver
author: Realtek and the Linux r8169 crew <netdev@...r.kernel.org>
srcversion: 193CB90A8A79025AB5CC132
alias: pci:v00000001d00008168sv*sd00002410bc*sc*i*
alias: pci:v00001737d00001032sv*sd00000024bc*sc*i*
alias: pci:v000016ECd00000116sv*sd*bc*sc*i*
alias: pci:v00001259d0000C107sv*sd*bc*sc*i*
alias: pci:v00001186d00004302sv*sd*bc*sc*i*
alias: pci:v00001186d00004300sv*sd*bc*sc*i*
alias: pci:v000010ECd00008169sv*sd*bc*sc*i*
alias: pci:v000010ECd00008168sv*sd*bc*sc*i*
alias: pci:v000010ECd00008167sv*sd*bc*sc*i*
alias: pci:v000010ECd00008136sv*sd*bc*sc*i*
alias: pci:v000010ECd00008129sv*sd*bc*sc*i*
depends:
intree: Y
vermagic: 3.4.28-2.20-default SMP mod_unload modversions
parm: use_dac:Enable PCI DAC. Unsafe on 32 bit PCI slot. (int)
parm: debug:Debug verbosity level (0=none, ..., 16=all) (int)
Asus M5A97 LE R2.0 lspci:
02:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd.
RTL8111/8168 PCI Express Gigabit Ethernet controller [10ec:8168] (rev 09)
Subsystem: ASUSTeK Computer Inc. P8H77-I Motherboard [1043:8505]
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 81
Region 0: I/O ports at d000 [size=256]
Region 2: Memory at d2104000 (64-bit, prefetchable) [size=4K]
Region 4: Memory at d2100000 (64-bit, prefetchable) [size=16K]
Capabilities: [40] Power Management version 3
Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=375mA
PME(D0+,D1+,D2+,D3hot+,D3cold+)
Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
Capabilities: [50] MSI: Enable+ Count=1/1 Maskable- 64bit+
Address: 00000000feeff00c Data: 416a
Capabilities: [70] Express (v2) Endpoint, MSI 01
DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s
<512ns, L1 <64us
ExtTag- AttnBtn- AttnInd- PwrInd- RBE+ FLReset-
DevCtl: Report errors: Correctable- Non-Fatal- Fatal-
Unsupported-
RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop-
MaxPayload 128 bytes, MaxReadReq 4096 bytes
DevSta: CorrErr+ UncorrErr- FatalErr- UnsuppReq+ AuxPwr+
TransPend-
LnkCap: Port #0, Speed 2.5GT/s, Width x1, ASPM L0s L1,
Latency L0 unlimited, L1 <64us
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-
DevCap2: Completion Timeout: Range ABCD, TimeoutDis+
DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-
LnkCtl2: Target Link Speed: 2.5GT/s, EnterCompliance-
SpeedDis-, Selectable De-emphasis: -6dB
Transmit Margin: Normal Operating Range,
EnterModifiedCompliance- ComplianceSOS-
Compliance De-emphasis: -6dB
LnkSta2: Current De-emphasis Level: -6dB,
EqualizationComplete-, EqualizationPhase1-
EqualizationPhase2-, EqualizationPhase3-,
LinkEqualizationRequest-
Capabilities: [b0] MSI-X: Enable- Count=4 Masked-
Vector table: BAR=4 offset=00000000
PBA: BAR=4 offset=00000800
Capabilities: [d0] Vital Product Data
No end tag found
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: 00, GenCap+ CGenEn- ChkCap+
ChkEn-
Capabilities: [140 v1] Virtual Channel
Caps: LPEVC=0 RefClk=100ns PATEntryBits=1
Arb: Fixed- WRR32- WRR64- WRR128-
Ctrl: ArbSelect=Fixed
Status: InProgress-
VC0: Caps: PATOffset=00 MaxTimeSlots=1 RejSnoopTrans-
Arb: Fixed- WRR32- WRR64- WRR128- TWRR128-
WRR256-
Ctrl: Enable+ ID=0 ArbSelect=Fixed TC/VC=01
Status: NegoPending- InProgress-
Capabilities: [160 v1] Device Serial Number 00-00-00-00-68-4c-e0-00
Kernel driver in use: r8168
Asus M5A97 EVO R2.0 lspci:
02:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd.
RTL8111/8168 PCI Express Gigabit Ethernet controller [10ec:8168] (rev 09)
Subsystem: ASUSTeK Computer Inc. P8H77-I Motherboard [1043:8505]
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 90
Region 0: I/O ports at e000 [size=256]
Region 2: Memory at fea04000 (64-bit, prefetchable) [size=4K]
Region 4: Memory at fea00000 (64-bit, prefetchable) [size=16K]
Capabilities: [40] Power Management version 3
Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=375mA
PME(D0+,D1+,D2+,D3hot+,D3cold+)
Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
Capabilities: [50] MSI: Enable+ Count=1/1 Maskable- 64bit+
Address: 00000000feeff00c Data: 41b2
Capabilities: [70] Express (v2) Endpoint, MSI 01
DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s
<512ns, L1 <64us
ExtTag- AttnBtn- AttnInd- PwrInd- RBE+ FLReset-
DevCtl: Report errors: Correctable- Non-Fatal- Fatal-
Unsupported-
RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop-
MaxPayload 128 bytes, MaxReadReq 4096 bytes
DevSta: CorrErr+ UncorrErr- FatalErr- UnsuppReq+ AuxPwr+
TransPend-
LnkCap: Port #0, Speed 2.5GT/s, Width x1, ASPM L0s L1,
Latency L0 unlimited, L1 <64us
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-
DevCap2: Completion Timeout: Range ABCD, TimeoutDis+
DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-
LnkCtl2: Target Link Speed: 2.5GT/s, EnterCompliance-
SpeedDis-, Selectable De-emphasis: -6dB
Transmit Margin: Normal Operating Range,
EnterModifiedCompliance- ComplianceSOS-
Compliance De-emphasis: -6dB
LnkSta2: Current De-emphasis Level: -6dB,
EqualizationComplete-, EqualizationPhase1-
EqualizationPhase2-, EqualizationPhase3-,
LinkEqualizationRequest-
Capabilities: [b0] MSI-X: Enable- Count=4 Masked-
Vector table: BAR=4 offset=00000000
PBA: BAR=4 offset=00000800
Capabilities: [d0] Vital Product Data
No end tag found
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: 00, GenCap+ CGenEn- ChkCap+
ChkEn-
Capabilities: [140 v1] Virtual Channel
Caps: LPEVC=0 RefClk=100ns PATEntryBits=1
Arb: Fixed- WRR32- WRR64- WRR128-
Ctrl: ArbSelect=Fixed
Status: InProgress-
VC0: Caps: PATOffset=00 MaxTimeSlots=1 RejSnoopTrans-
Arb: Fixed- WRR32- WRR64- WRR128- TWRR128-
WRR256-
Ctrl: Enable+ ID=0 ArbSelect=Fixed TC/VC=01
Status: NegoPending- InProgress-
Capabilities: [160 v1] Device Serial Number 00-00-00-00-68-4c-e0-00
Kernel driver in use: r8168
Differences between LE and EVO:
--- M5A97 LE
+++ M5A97 EVO
@@ -3,15 +3,15 @@
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 81
- Region 0: I/O ports at d000 [size=256]
- Region 2: Memory at d2104000 (64-bit, prefetchable) [size=4K]
- Region 4: Memory at d2100000 (64-bit, prefetchable) [size=16K]
+ Interrupt: pin A routed to IRQ 90
+ Region 0: I/O ports at e000 [size=256]
+ Region 2: Memory at fea04000 (64-bit, prefetchable) [size=4K]
+ Region 4: Memory at fea00000 (64-bit, prefetchable) [size=16K]
Capabilities: [40] Power Management version 3
Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=375mA
PME(D0+,D1+,D2+,D3hot+,D3cold+)
Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
Capabilities: [50] MSI: Enable+ Count=1/1 Maskable- 64bit+
- Address: 00000000feeff00c Data: 416a
+ Address: 00000000feeff00c Data: 41b2
Capabilities: [70] Express (v2) Endpoint, MSI 01
DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s
<512ns, L1 <64us
ExtTag- AttnBtn- AttnInd- PwrInd- RBE+ FLReset-
@@ -40,7 +40,7 @@
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+
+ CESta: RxErr- BadTLP- BadDLLP- Rollover- Timeout-
NonFatalErr+
CEMsk: RxErr- BadTLP- BadDLLP- Rollover- Timeout-
NonFatalErr+
AERCap: First Error Pointer: 00, GenCap+ CGenEn- ChkCap+
ChkEn-
Capabilities: [140 v1] Virtual Channel
--
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