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    SubjectRe: 2.6.28: r8169: NETDEV WATCHDOG: eth0 (r8169): transmit timed out
    Justin Piszcz wrote:
    > Most likely disabling this (onboard-nic) and using Intel PCI-Express 1
    > Gbps card but FYI:
    >
    > [505628.695393] ------------[ cut here ]------------
    > [505628.695398] WARNING: at net/sched/sch_generic.c:226
    > dev_watchdog+0x22e/0x240()
    > [505628.695400] NETDEV WATCHDOG: eth0 (r8169): transmit timed out
    > [505628.695403] Pid: 0, comm: swapper Not tainted 2.6.28 #1
    > [505628.695405] Call Trace:
    > [505628.695407] <IRQ> [<ffffffff8024f628>] warn_slowpath+0xc8/0x110
    > [505628.695416] [<ffffffff805b9310>] ip_finish_output+0x0/0x2b0
    > [505628.695419] [<ffffffff8059e3e4>] eth_header+0x34/0xd0
    > [505628.695423] [<ffffffff804078c9>] __next_cpu+0x19/0x30
    > [505628.695427] [<ffffffff802472dc>] find_busiest_group+0x1dc/0x970
    > [505628.695432] [<ffffffff802308b9>] read_tsc+0x9/0x20
    > [505628.695436] [<ffffffff802599c4>] lock_timer_base+0x34/0x70
    > [505628.695440] [<ffffffff8026aa98>] getnstimeofday+0x48/0xc0
    > [505628.695443] [<ffffffff8040d601>] strlcpy+0x41/0x50
    > [505628.695447] [<ffffffff8059e9fe>] dev_watchdog+0x22e/0x240
    > [505628.695449] [<ffffffff802308b9>] read_tsc+0x9/0x20
    > [505628.695453] [<ffffffff8059e7d0>] dev_watchdog+0x0/0x240
    > [505628.695456] [<ffffffff802594be>] run_timer_softirq+0x12e/0x200
    > [505628.695460] [<ffffffff80238c35>] lapic_next_event+0x15/0x20
    > [505628.695463] [<ffffffff80254e13>] __do_softirq+0x93/0x160
    > [505628.695467] [<ffffffff802684c2>] hrtimer_interrupt+0x152/0x1c0
    > [505628.695471] [<ffffffff8022aabc>] call_softirq+0x1c/0x30
    > [505628.695474] [<ffffffff8022c455>] do_softirq+0x35/0x70
    > [505628.695477] [<ffffffff802394f6>] smp_apic_timer_interrupt+0x86/0xd0
    > [505628.695480] [<ffffffff8022a50b>] apic_timer_interrupt+0x6b/0x70
    > [505628.695482] <EOI> [<ffffffff805f0320>] unix_poll+0x0/0xb0
    > [505628.695489] [<ffffffff8023147c>] mwait_idle+0x3c/0x50
    > [505628.695493] [<ffffffff80228a1c>] cpu_idle+0x5c/0x90
    > [505628.695495] ---[ end trace eddb8da7fddd6198 ]---
    > [505628.700048] r8169: eth0: link up
    >
    > I believe this occured when trying to burn a DVD via Nero over a 1gbps
    > connection.
    >
    > Justin.
    > --
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    >
    >
    >
    I'm also experiencing this problem on a Gigabit connection.
    I can reproduce it when needed. Only need to scp a giant file out to
    another gigabit enabled machine, issuing eg, scp -c arcfour <source
    file> <destfile>
    It's a specific NIC problem, as I have another 3 PCI NIC's, also using
    the r8169 driver, and all of those work fine. The NIC that does not work
    is an integrated PCI-E NIC. Details are as follow:

    - Motherboard: Jetway NC92-300-LF (
    http://www.jetway.com.tw/jw/ipcboard_view.asp?productid=573&proname=NC92-330-LF
    )

    - The failing NIC is the onboard integrated. Output from lspci -v:
    01:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd.
    RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 02)
    Subsystem: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI
    Express Gigabit Ethernet controller
    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 25
    Region 0: I/O ports at de00 [size=256]
    Region 2: Memory at fdeff000 (64-bit, non-prefetchable) [size=4K]
    Region 4: Memory at fdbf0000 (64-bit, prefetchable) [size=64K]
    [virtual] Expansion ROM at fdb00000 [disabled] [size=128K]
    Capabilities: [40] Power Management version 3
    Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=375mA
    PME(D0+,D1+,D2+,D3hot+,D3cold+)
    Status: D0 PME-Enable- DSel=0 DScale=0 PME-
    Capabilities: [50] Message Signalled Interrupts: Mask- 64bit+
    Queue=0/0 Enable+
    Address: 00000000fee0f00c Data: 4171
    Capabilities: [70] Express (v1) Endpoint, MSI 01
    DevCap: MaxPayload 256 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 <512ns, L1 <64us
    ClockPM+ Suprise- 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: [b0] MSI-X: Enable- Mask- TabSize=2
    Vector table: BAR=4 offset=00000000
    PBA: BAR=4 offset=00000800
    Capabilities: [d0] Vital Product Data <?>
    Capabilities: [100] Advanced Error Reporting <?>
    Capabilities: [140] Virtual Channel <?>
    Capabilities: [160] Device Serial Number 00-e0-4c-68-00-00-00-33
    Kernel driver in use: r8169
    Kernel modules: r8169

    - Working NICS. Ony of the daughter board expansion also using r8169 (
    http://www.jetway.com.tw/jw/ipcboard_view.asp?productid=174&proname=AD3RTLAN-G
    ). Output of lspci -vvv:
    02:04.0 Ethernet controller: Realtek Semiconductor Co., Ltd.
    RTL-8110SC/8169SC Gigabit Ethernet (rev 10)
    Subsystem: Jetway Information Co., Ltd. Device 10ec
    Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop-
    ParErr- Stepping- SERR- FastB2B- DisINTx-
    Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
    <TAbort- <MAbort- >SERR- <PERR- INTx-
    Latency: 64 (8000ns min, 16000ns max), Cache Line Size: 32 bytes
    Interrupt: pin A routed to IRQ 18
    Region 0: I/O ports at ee00 [size=256]
    Region 1: Memory at fddff000 (32-bit, non-prefetchable) [size=256]
    [virtual] Expansion ROM at fdc00000 [disabled] [size=128K]
    Capabilities: [dc] Power Management version 2
    Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=375mA
    PME(D0-,D1+,D2+,D3hot+,D3cold+)
    Status: D0 PME-Enable- DSel=0 DScale=0 PME-
    Kernel driver in use: r8169
    Kernel modules: r8169

    02:06.0 Ethernet controller: Realtek Semiconductor Co., Ltd.
    RTL-8110SC/8169SC Gigabit Ethernet (rev 10)
    Subsystem: Jetway Information Co., Ltd. Device 10ec
    Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop-
    ParErr- Stepping- SERR- FastB2B- DisINTx-
    Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
    <TAbort- <MAbort- >SERR- <PERR- INTx-
    Latency: 64 (8000ns min, 16000ns max), Cache Line Size: 32 bytes
    Interrupt: pin A routed to IRQ 19
    Region 0: I/O ports at ec00 [size=256]
    Region 1: Memory at fddfe000 (32-bit, non-prefetchable) [size=256]
    [virtual] Expansion ROM at fdc20000 [disabled] [size=128K]
    Capabilities: [dc] Power Management version 2
    Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=375mA
    PME(D0-,D1+,D2+,D3hot+,D3cold+)
    Status: D0 PME-Enable- DSel=0 DScale=0 PME-
    Kernel driver in use: r8169
    Kernel modules: r8169

    02:07.0 Ethernet controller: Realtek Semiconductor Co., Ltd.
    RTL-8110SC/8169SC Gigabit Ethernet (rev 10)
    Subsystem: Jetway Information Co., Ltd. Device 10ec
    Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop-
    ParErr- Stepping- SERR- FastB2B- DisINTx-
    Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
    <TAbort- <MAbort- >SERR- <PERR- INTx-
    Latency: 64 (8000ns min, 16000ns max), Cache Line Size: 32 bytes
    Interrupt: pin A routed to IRQ 16
    Region 0: I/O ports at ea00 [size=256]
    Region 1: Memory at fddfd000 (32-bit, non-prefetchable) [size=256]
    [virtual] Expansion ROM at fdc40000 [disabled] [size=128K]
    Capabilities: [dc] Power Management version 2
    Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=375mA
    PME(D0-,D1+,D2+,D3hot+,D3cold+)
    Status: D0 PME-Enable- DSel=0 DScale=0 PME-
    Kernel driver in use: r8169
    Kernel modules: r8169

    This is first time install. It happens on a 2.6.29-rc5 on x86_64 Kernel.
    It is not a clean vanilla, but an openSUSE Kotd Kernel. However, by
    taking a wide look at openSUSE's source rpm, i found no patch that could
    trigger this... I could test it with a vanilla kernel. It would be hard
    to compile a kernel on a Dual Atom 330 cpu but, is feasible...

    Is there any patch I can try before trying anything more elaborate ?
    I've scanned the 2.6.29-rc5 r8169 driver and found no specific tweek for
    this NIC ( RTL8111/8168B ), so it may be a case of lack of support for it...

    Also CCing driver maintainer Francois Romieu and netdev ML.

    Thanks for your time,

    --
    Rui Santos
    http://www.ruisantos.com/

    Veni, vidi, Linux!



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