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Date: Fri, 20 Apr 2012 12:05:46 -0700 From: Tom Herbert <therbert@...gle.com> To: Ben Greear <greearb@...delatech.com> Cc: netdev <netdev@...r.kernel.org>, e1000-devel list <e1000-devel@...ts.sourceforge.net>, Eric Dumazet <eric.dumazet@...il.com> Subject: Re: e1000e tx queue timeout in 3.3.0 (bisected to BQL support for e1000e) > I am seeing something similar with the 'igb' driver, though this > NIC also involves a side-driver that does bypass. When I enable/disable > bypass, the links bounce (as expected), and igb reports the same > timeout that I was seeing with e1000e. > Hi Ben, Are the circumstances the same between igb and e1000e for the issue? That is in both cases are links being bounced or reset? Thanks, Tom > If I revert the igb BQL patch, then it works fine (kernel 3.3.2+). > > I did not do an exhaustive bisect, nor have tested non-bypass > igb hardware, but since reverting the patch fixes the problem.... > > Maybe there is some fundamental issue with BQL when a NIC > resets itself (in this case, due to remote port doing > a reset) Maybe we are not properly accounting pkts cleared > from the xmit queue on reset or something of that nature? > > I'm happy to test patches of someone has suggestions... > > Thanks, > Ben > > >> >> Tom >> >> On Thu, Apr 19, 2012 at 4:27 PM, Ben Greear<greearb@...delatech.com> >> wrote: >>> >>> Test case: >>> >>> Run full duplex traffic (900Mbps rx, 400Mbps tx) UDP traffic >>> (moderate speeds of traffic has issues as well, maybe not as easy to >>> reproduce) >>> reset peer interface >>> ----> tx queue timeout >>> >>> >>> Apr 19 16:12:48 localhost kernel: e1000e: eth2 NIC Link is Down >>> Apr 19 16:12:48 localhost kernel: e1000e 0000:08:00.0: eth2: Reset >>> adapter >>> Apr 19 16:12:48 localhost kernel: e1000e: eth3 NIC Link is Down >>> Apr 19 16:12:50 localhost kernel: e1000e: eth2 NIC Link is Up 1000 Mbps >>> Full >>> Duplex, Flow Control: Rx/Tx >>> Apr 19 16:12:50 localhost kernel: ADDRCONF(NETDEV_CHANGE): eth2: link >>> becomes ready >>> Apr 19 16:12:50 localhost kernel: e1000e: eth3 NIC Link is Up 1000 Mbps >>> Full >>> Duplex, Flow Control: Rx/Tx >>> Apr 19 16:12:50 localhost kernel: ADDRCONF(NETDEV_CHANGE): eth3: link >>> becomes ready >>> Apr 19 16:12:54 localhost /usr/sbin/irqbalance: Load average increasing, >>> re-enabling all cpus for irq balancing >>> Apr 19 16:12:55 localhost kernel: ------------[ cut here ]------------ >>> Apr 19 16:12:55 localhost kernel: WARNING: at >>> /home/greearb/git/linux-3.3.dev.y/net/sched/sch_generic.c:256 >>> dev_watchdog+0xf4/0x154() >>> Apr 19 16:12:55 localhost kernel: Hardware name: X7DBU >>> Apr 19 16:12:55 localhost kernel: NETDEV WATCHDOG: eth2 (e1000e): >>> transmit >>> queue 0 timed out >>> Apr 19 16:12:55 localhost kernel: Modules linked in: xt_CT iptable_raw >>> 8021q >>> garp stp llc veth ppdev parport_pc lp parport fuse macvlan pktgen >>> iscsi_tcp >>> libiscsi_tcp libiscsi scsi_transport_iscsi lockd w83793 w83627hf >>> hwmon_vid >>> coretemp iTCO_wdt microcode iTCO_vendor_support pcspkr i5k_amb ioatdma >>> i2c_i801 >>> i5000_edac dca edac_core e1000e shpchp uinput sunrpc ipv6 autofs4 floppy >>> radeon ttm drm_kms_helper drm hwmon i2c_algo_bit i2c_core [last unloaded: >>> nf_nat] >>> Apr 19 16:12:55 localhost kernel: Pid: 0, comm: kworker/0:1 Not tainted >>> 3.2.0-rc2+ #36 >>> Apr 19 16:12:55 localhost kernel: Call Trace: >>> Apr 19 16:12:55 localhost kernel:<IRQ> [<ffffffff81042902>] >>> warn_slowpath_common+0x80/0x98 >>> Apr 19 16:12:55 localhost kernel: [<ffffffff810429ae>] >>> warn_slowpath_fmt+0x41/0x43 >>> Apr 19 16:12:55 localhost kernel: [<ffffffff8139f8a3>] >>> dev_watchdog+0xf4/0x154 >>> Apr 19 16:12:55 localhost kernel: [<ffffffff8104d371>] >>> run_timer_softirq+0x16f/0x201 >>> Apr 19 16:12:55 localhost kernel: [<ffffffff8139f7af>] ? >>> netif_tx_unlock+0x57/0x57 >>> Apr 19 16:12:55 localhost kernel: [<ffffffff81047e47>] >>> __do_softirq+0x86/0x12f >>> Apr 19 16:12:55 localhost kernel: [<ffffffff8105d54e>] ? >>> hrtimer_interrupt+0x12b/0x1bd >>> Apr 19 16:12:55 localhost kernel: [<ffffffff8144296c>] >>> call_softirq+0x1c/0x30 >>> Apr 19 16:12:55 localhost kernel: [<ffffffff8100bb75>] >>> do_softirq+0x41/0x7e >>> Apr 19 16:12:55 localhost kernel: [<ffffffff81047c26>] irq_exit+0x3f/0xbb >>> Apr 19 16:12:55 localhost kernel: [<ffffffff81021df5>] >>> smp_apic_timer_interrupt+0x85/0x93 >>> Apr 19 16:12:55 localhost kernel: [<ffffffff814411de>] >>> apic_timer_interrupt+0x6e/0x80 >>> Apr 19 16:12:55 localhost kernel:<EOI> [<ffffffff81010b8c>] ? >>> mwait_idle+0x6e/0x8c >>> Apr 19 16:12:55 localhost kernel: [<ffffffff81010b7f>] ? >>> mwait_idle+0x61/0x8c >>> Apr 19 16:12:55 localhost kernel: [<ffffffff81009e72>] cpu_idle+0x67/0xbe >>> Apr 19 16:12:55 localhost kernel: [<ffffffff81435477>] >>> start_secondary+0x194/0x199 >>> Apr 19 16:12:55 localhost kernel: ---[ end trace e3ca12fc1a8b85da ]--- >>> Apr 19 16:12:55 localhost kernel: e1000e 0000:08:00.0: eth2: Reset >>> adapter >>> Apr 19 16:12:57 localhost abrt-dump-oops[898]: abrt-dump-oops: Found >>> oopses: >>> 1 >>> Apr 19 16:12:57 localhost abrt-dump-oops[898]: abrt-dump-oops: Creating >>> dump >>> directories >>> Apr 19 16:12:57 localhost abrtd: Directory >>> 'oops-2012-04-19-16:12:57-898-0' >>> creation detected >>> Apr 19 16:12:57 localhost abrt-dump-oops: Reported 1 kernel oopses to >>> Abrt >>> Apr 19 16:12:57 localhost abrtd: Can't open file >>> '/var/spool/abrt/oops-2012-04-19-16:12:57-898-0/uid': No such file or >>> directory >>> Apr 19 16:12:57 localhost abrtd: DUP_OF_DIR: >>> /var/spool/abrt/oops-2012-04-19-15:02:13-862-0 >>> Apr 19 16:12:57 localhost abrtd: Dump directory is a duplicate of >>> /var/spool/abrt/oops-2012-04-19-15:02:13-862-0 >>> Apr 19 16:12:57 localhost abrtd: Deleting dump directory >>> oops-2012-04-19-16:12:57-898-0 (dup of oops-2012-04-19-15:02:13-862-0), >>> sending dbus signal >>> Apr 19 16:12:58 localhost kernel: e1000e: eth2 NIC Link is Up 1000 Mbps >>> Full >>> Duplex, Flow Control: Rx/Tx >>> Apr 19 16:12:58 localhost kernel: ADDRCONF(NETDEV_CHANGE): eth2: link >>> becomes ready >>> Apr 19 16:13:03 localhost /usr/sbin/irqbalance: Load average increasing, >>> re-enabling all cpus for irq balancing >>> Apr 19 16:13:04 localhost kernel: e1000e 0000:08:00.0: eth2: Reset >>> adapter >>> Apr 19 16:13:05 localhost chronyd[1003]: Selected source 108.59.2.194 >>> Apr 19 16:13:07 localhost kernel: e1000e: eth2 NIC Link is Up 1000 Mbps >>> Full >>> Duplex, Flow Control: Rx/Tx >>> Apr 19 16:13:07 localhost kernel: ADDRCONF(NETDEV_CHANGE): eth2: link >>> becomes ready >>> .... >>> >>> lspci: >>> >>> 08:00.0 Ethernet controller: Intel Corporation 82571EB Gigabit Ethernet >>> Controller (rev 06) >>> Subsystem: Intel Corporation PRO/1000 PT Dual Port Server Adapter >>> 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: 32 bytes >>> Interrupt: pin A routed to IRQ 74 >>> Region 0: Memory at d8300000 (32-bit, non-prefetchable) >>> [size=128K] >>> Region 2: I/O ports at 3000 [size=32] >>> [virtual] Expansion ROM at d8d00000 [disabled] [size=128K] >>> Capabilities: [c8] 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=1 PME- >>> Capabilities: [d0] MSI: Enable+ Count=1/1 Maskable- 64bit+ >>> Address: 00000000feeff00c Data: 41a3 >>> Capabilities: [e0] Express (v1) Endpoint, MSI 00 >>> 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 #1, Speed 2.5GT/s, Width x2, ASPM L0s L1, >>> Latency L0<4us, 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 x2, 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: [140 v1] Device Serial Number >>> 00-e0-ed-ff-ff-0c-11-6e >>> Kernel driver in use: e1000e >>> Kernel modules: e1000e >>> >>> >>> 3f0cfa3bc11e7f00c9994e0f469cbc0e7da7b00c is the first bad commit >>> commit 3f0cfa3bc11e7f00c9994e0f469cbc0e7da7b00c >>> Author: Tom Herbert<therbert@...gle.com> >>> Date: Mon Nov 28 16:33:16 2011 +0000 >>> >>> e1000e: Support for byte queue limits >>> >>> Changes to e1000e to use byte queue limits. >>> >>> Signed-off-by: Tom Herbert<therbert@...gle.com> >>> Acked-by: Eric Dumazet<eric.dumazet@...il.com> >>> Signed-off-by: David S. Miller<davem@...emloft.net> >>> >>> :040000 040000 bf3e2ec64fd74253563e1ab39797b27a5f2df3fe >>> 51914e221547b95a989b5c7e9b037c9370fd734e M drivers >>> >>> >>> Thanks, >>> Ben >>> >>> -- >>> Ben Greear<greearb@...delatech.com> >>> Candela Technologies Inc http://www.candelatech.com >>> > > > -- > Ben Greear <greearb@...delatech.com> > Candela Technologies Inc http://www.candelatech.com > -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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