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Date: Mon, 7 Jan 2019 14:42:17 +0530
From: Siva Reddy Kallam <siva.kallam@...adcom.com>
To: Kai Heng Feng <kai.heng.feng@...onical.com>
Cc: Prashant Sreedharan <prashant@...adcom.com>,
Michael Chan <mchan@...adcom.com>,
Linux Netdev List <netdev@...r.kernel.org>,
Chih-Hsyuan Ho <chih.ho@...onical.com>
Subject: Re: Latitude 5495's tg3 hangs under heavy load
On Mon, Jan 7, 2019 at 11:34 AM Kai Heng Feng
<kai.heng.feng@...onical.com> wrote:
>
> Hi tg3 folks,
>
> Any idea how to solve the bug?
>
> Kai-Heng
Hi,
Can you share Register dump(ethtool -d)?
Is ifconfig down/up bringing back interface?
>
> > On Dec 7, 2018, at 17:27, Kai Heng Feng <kai.heng.feng@...onical.com> wrote:
> >
> > Hi tg3 maintainers,
> >
> > I’ve encountered network freeze when using tg3 in gigabits net.
> >
> > The issue can be easily reproduced when using scp to transfer files in local network.
> >
> > The symptom is pretty similar to what this commit is trying to solve:
> > commit 3a498606bb04af603a46ebde8296040b2de350d1
> > Author: Sanjeev Bansal <sanjeevb.bansal@...adcom.com>
> > Date: Mon Jul 16 11:13:32 2018 +0530
> >
> > tg3: Add higher cpu clock for 5762.
> >
> > This patch has fix for TX timeout while running bi-directional
> > traffic with 100 Mbps using 5762.
> >
> > But reverting this commit doesn’t help.
> >
> > Latitude 5495 is a AMD Raven Ridge platform, not sure if this matters.
> >
> > Here’s the lspci for this device:
> > 03:00.0 Ethernet controller [0200]: Broadcom Inc. and subsidiaries NetXtreme BCM5762 Gigabit Ethernet PCIe [14e4:1687] (rev 10)
> > Subsystem: Dell NetXtreme BCM5762 Gigabit Ethernet PCIe [1028:0814]
> > 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
> > Interrupt: pin A routed to IRQ 16
> > Region 0: Memory at e0220000 (64-bit, prefetchable) [size=64K]
> > Region 2: Memory at e0210000 (64-bit, prefetchable) [size=64K]
> > Region 4: Memory at e0200000 (64-bit, prefetchable) [size=64K]
> > Capabilities: [48] Power Management version 3
> > Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0+,D1-,D2-,D3hot+,D3cold+)
> > Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=1 PME-
> > Capabilities: [50] Vital Product Data
> > Product Name: Broadcom NetXtreme Gigabit Ethernet Controller
> > Read-only fields:
> > [PN] Part number: BCM95762
> > [EC] Engineering changes: 106679-15
> > [SN] Serial number: 0123456789
> > [MN] Manufacture ID: 31 34 65 34
> > [RV] Reserved: checksum good, 28 byte(s) reserved
> > Read/write fields:
> > [YA] Asset tag: XYZ01234567
> > [RW] Read-write area: 107 byte(s) free
> > End
> > Capabilities: [58] MSI: Enable- Count=1/8 Maskable- 64bit+
> > Address: 0000000000000000 Data: 0000
> > Capabilities: [a0] MSI-X: Enable+ Count=6 Masked-
> > Vector table: BAR=4 offset=00000000
> > PBA: BAR=2 offset=00000120
> > Capabilities: [ac] Express (v2) Endpoint, MSI 00
> > DevCap: MaxPayload 256 bytes, PhantFunc 0, Latency L0s <4us, L1 <64us
> > ExtTag- AttnBtn- AttnInd- PwrInd- RBE+ FLReset+ SlotPowerLimit 0.000W
> > DevCtl: Report errors: Correctable- Non-Fatal- Fatal- Unsupported-
> > RlxdOrd- ExtTag- PhantFunc- AuxPwr+ NoSnoop- FLReset-
> > MaxPayload 128 bytes, MaxReadReq 4096 bytes
> > DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr+ TransPend-
> > LnkCap: Port #0, Speed 5GT/s, Width x1, ASPM L0s L1, Exit Latency L0s <2us, L1 <64us
> > ClockPM+ Surprise- LLActRep- BwNot- ASPMOptComp+
> > LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- CommClk+
> > ExtSynch- ClockPM+ AutWidDis- BWInt- AutBWInt-
> > LnkSta: Speed 5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
> > DevCap2: Completion Timeout: Range ABCD, TimeoutDis+, LTR+, OBFF Via WAKE#
> > DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-, LTR+, OBFF Disabled
> > LnkCtl2: Target Link Speed: 2.5GT/s, EnterCompliance- SpeedDis-
> > Transmit Margin: Normal Operating Range, EnterModifiedCompliance- ComplianceSOS-
> > Compliance De-emphasis: -6dB
> > LnkSta2: Current De-emphasis Level: -3.5dB, EqualizationComplete-, EqualizationPhase1-
> > EqualizationPhase2-, EqualizationPhase3-, LinkEqualizationRequest-
> > 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: [13c v1] Device Serial Number 00-00-a4-4c-c8-5b-65-74
> > Capabilities: [150 v1] Power Budgeting <?>
> > Capabilities: [160 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=ff
> > Status: NegoPending- InProgress-
> > Capabilities: [1b0 v1] Latency Tolerance Reporting
> > Max snoop latency: 1048576ns
> > Max no snoop latency: 1048576ns
> > Capabilities: [230 v1] Transaction Processing Hints
> > Interrupt vector mode supported
> > Steering table in MSI-X table
> > Kernel driver in use: tg3
> > Kernel modules: tg3
> >
> > Please let me know if you need more information.
> >
> > Kai-Heng
>
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