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Message-ID: <20100906100932.GA15029@redhat.com> Date: Mon, 6 Sep 2010 13:09:53 +0300 From: "Michael S. Tsirkin" <mst@...hat.com> To: Yaniv Rosner <yaniv.rosner@...adcom.com>, Michael Chan <mchan@...adcom.com> Cc: netdev@...r.kernel.org, eilong@...adcom.com, linux-kernel@...r.kernel.org Subject: bnx2: link drops when idle on 2.6.36-rc3 I have an IBM server which after switching to 2.6.36-rc3, started experiencing link drops, where link would go down apparently at random. The link can be brought back up without issues. I started seing this after switching to 2.6.36-rc3. net-2.6 (0b5d404e349c0236b11466c0a4785520c0be6982) also has this issue, 2.6.34 seems to work fine. Did not try bisecting or testing 2.6.35 yet. Even log in hardware monitor shows e.g. SERVPROC 05/17/01, 20:13:28 LAN: Ethernet[0] interface is now active SERVPROC 05/17/01, 20:09:10 LAN: Ethernet[0] interface is no longer active SERVPROC 05/17/01, 19:40:06 LAN: Ethernet[0] interface is now active SERVPROC 05/17/01, 19:36:42 LAN: Ethernet[0] interface is no longer active The server is mostly idle when this happens. lspci output for the device is below. There appears nothing interesting in dmesg. I can open a bugzilla at kernel.org if needed, just need to test 2.6.35 first. 04:00.0 Ethernet controller: Broadcom Corporation NetXtreme II BCM5708 Gigabit Ethernet (rev 12) Subsystem: IBM Device 0342 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 (16000ns min), Cache Line Size: 64 bytes Interrupt: pin A routed to IRQ 51 Region 0: Memory at c8000000 (64-bit, non-prefetchable) [size=32M] Capabilities: [40] PCI-X non-bridge device Command: DPERE- ERO- RBC=512 OST=4 Status: Dev=04:00.0 64bit+ 133MHz+ SCD- USC- DC=simple DMMRBC=512 DMOST=8 DMCRS=32 RSCEM- 266MHz- 533MHz- Capabilities: [48] 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: [50] Vital Product Data Product Name: Broadcom NetXtreme II Ethernet Controller Read-only fields: [PN] Part number: BCM95706A0 [EC] Engineering changes: 220197-2 [SN] Serial number: 0123456789 [MN] Manufacture ID: 31 34 65 34 [RV] Reserved: checksum bad, 30 byte(s) reserved End Capabilities: [58] MSI: Enable+ Count=1/1 Maskable- 64bit+ Address: 00000000fee0800c Data: 41c9 Kernel driver in use: bnx2 Kernel modules: bnx2 Thanks! -- MST -- 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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