Chris, You need to switch DCA on in the BIOS, the dmesg message about DCA should disappear if its working, my Dell R710 was off by default in the BIOS.
Andrew -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Luca Deri Sent: Monday, October 24, 2011 8:20 PM To: [email protected] Subject: Re: [Ntop-misc] ixgbe and DCA Chris i believe DCA is a feature of your chipset, so your hw must support it and this should be your case. The problem with Dell's is that in some cases BIOS disables it. We'll definitively update the drivers to the latest version as soon as we have some time, but I doubt this will change anything Luca On Oct 24, 2011, at 1:08 PM, Chris Wakelin wrote: > Hi, > > I've just got a couple of Intel X520-DA2 (82599) cards and find that > with the PF_RING ixgbe non-DNA driver I get > >> [267600.170125] Intel(R) 10 Gigabit PCI Express Network Driver - >> version 3.1.15-NAPI [267600.170129] Copyright (c) 1999-2010 Intel >> Corporation. >> [267600.170132] cpacket.com nsec packet timestamp decoding disabled >> [267600.170187] ixgbe 0000:0c:00.0: PCI INT A -> GSI 16 (level, low) >> -> IRQ 16 [267600.170219] ixgbe 0000:0c:00.0: setting latency timer >> to 64 [267600.320265] ixgbe: 0000:0c:00.0: ixgbe_check_options: Flow >> Director hash filtering enabled [267600.320268] ixgbe: 0000:0c:00.0: >> ixgbe_check_options: Flow Director allocated 64kB of packet buffer >> [267600.320271] ixgbe: 0000:0c:00.0: ixgbe_check_options: ATR Tx >> Packet sample rate set to default of 20 [267600.320274] ixgbe: >> 0000:0c:00.0: ixgbe_check_options: FCoE Offload feature enabled >> [267600.342175] ixgbe 0000:0c:00.0: irq 100 for MSI/MSI-X >> [267600.342179] ixgbe 0000:0c:00.0: irq 101 for MSI/MSI-X >> [267600.342183] ixgbe 0000:0c:00.0: irq 102 for MSI/MSI-X >> [267600.342187] ixgbe 0000:0c:00.0: irq 103 for MSI/MSI-X >> [267600.342190] ixgbe 0000:0c:00.0: irq 104 for MSI/MSI-X >> [267600.342194] ixgbe 0000:0c:00.0: irq 105 for MSI/MSI-X >> [267600.342197] ixgbe 0000:0c:00.0: irq 106 for MSI/MSI-X >> [267600.342200] ixgbe 0000:0c:00.0: irq 107 for MSI/MSI-X >> [267600.342204] ixgbe 0000:0c:00.0: irq 108 for MSI/MSI-X [267600.342272] >> ixgbe: 0000:0c:00.0: ixgbe_init_interrupt_scheme: Multiqueue Enabled: Rx >> Queue count = 8, Tx Queue count = 8 [267600.343632] ixgbe: eth1: >> ixgbe_probe: No DCA provider found. Please start ioatdma for DCA >> functionality. >> [267600.343636] ixgbe: eth1: ixgbe_probe: (PCI Express:2.5Gb/s:Width >> x8) 00:1b:21:cd:9e:2c [267600.343716] ixgbe: eth1: ixgbe_probe: MAC: >> 2, PHY: 8, SFP+: 3, PBA No: E68793-004 [267600.343718] ixgbe: eth1: >> ixgbe_probe: GRO is enabled [267600.343720] ixgbe: eth1: ixgbe_probe: >> HW RSC is enabled [267600.345269] ixgbe: eth1: ixgbe_probe: Intel(R) >> 10 Gigabit Network Connection > > (and the same for eth2). > > Both the dca and ioatdma modules loaded correctly: > >> [ 4.216117] dca service started, version 1.12.1 > >> [ 4.243222] ioatdma: Intel(R) QuickData Technology Driver 4.00 >> [ 4.243297] ioatdma 0000:00:08.0: PCI INT A -> GSI 16 (level, low) -> IRQ >> 16 >> [ 4.243343] ioatdma 0000:00:08.0: setting latency timer to 64 >> [ 4.243400] ioatdma 0000:00:08.0: irq 99 for MSI/MSI-X > > If I use the vanilla 3.3.9 or above driver, or the 3.3.9 DNA driver I > don't get the DCA error (or the "nsec packet decoding disabled" > message) though the same tests that generate that message appear to be > in the source code: > >> [267906.406661] Intel(R) 10 Gigabit PCI Express Network Driver - >> version 3.3.9-DNA [267906.406666] Copyright (c) 1999-2011 Intel Corporation. >> [267906.406717] ixgbe 0000:0c:00.0: PCI INT A -> GSI 16 (level, low) >> -> IRQ 16 [267906.406753] ixgbe 0000:0c:00.0: setting latency timer >> to 64 [267906.560261] ixgbe: 0000:0c:00.0: ixgbe_check_options: FCoE >> Offload feature enabled [267906.582400] ixgbe 0000:0c:00.0: irq 100 >> for MSI/MSI-X [267906.582404] ixgbe 0000:0c:00.0: irq 101 for >> MSI/MSI-X [267906.582408] ixgbe 0000:0c:00.0: irq 102 for MSI/MSI-X >> [267906.582411] ixgbe 0000:0c:00.0: irq 103 for MSI/MSI-X >> [267906.582415] ixgbe 0000:0c:00.0: irq 104 for MSI/MSI-X >> [267906.582419] ixgbe 0000:0c:00.0: irq 105 for MSI/MSI-X >> [267906.582422] ixgbe 0000:0c:00.0: irq 106 for MSI/MSI-X >> [267906.582426] ixgbe 0000:0c:00.0: irq 107 for MSI/MSI-X >> [267906.582429] ixgbe 0000:0c:00.0: irq 108 for MSI/MSI-X >> [267906.583897] ixgbe 0000:0c:00.0: (PCI Express:2.5GT/s:Width x8) >> 00:1b:21:cd:9e:2c [267906.583978] ixgbe 0000:0c:00.0: dna0: MAC: 2, >> PHY: 8, SFP+: 3, PBA No: E68793-004 [267906.583981] ixgbe >> 0000:0c:00.0: dna0: Enabled Features: RxQ: 8 TxQ: 8 FdirHash RSS >> [267906.585553] ixgbe 0000:0c:00.0: dna0: Intel(R) 10 Gigabit Network >> Connection [267906.585586] ixgbe 0000:0c:00.1: PCI INT B -> GSI 17 >> (level, low) -> IRQ 17 [267906.585629] ixgbe 0000:0c:00.1: setting >> latency timer to 64 > > In all cases, lsmod suggests the dca module is required by ixgbe: > >> dca 6637 2 ixgbe,ioatdma > > This is on a Dell Poweredge 2950 with two quad-core Xeon X5535s > running Ubuntu 10.04 64-bit, 2.6.32-34 kernel (I get the same results > with 2.6.38-11). > > Is there a way to verify when DCA is working properly? > > Do we need an update to the newer ixgbe driver (latest is 3.6.7)? The > changes between 3.1.15 and 3.3.9 make porting the PF_RING > modifications rather tricky! > > Best Wishes, > Chris > > -- > --+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+- > Christopher Wakelin, [email protected] > IT Services Centre, The University of Reading, Tel: +44 (0)118 378 2908 > Whiteknights, Reading, RG6 6AF, UK Fax: +44 (0)118 975 3094 > _______________________________________________ > Ntop-misc mailing list > [email protected] > http://listgateway.unipi.it/mailman/listinfo/ntop-misc --- Keep looking, don't settle - Steve Jobs _______________________________________________ Ntop-misc mailing list [email protected] http://listgateway.unipi.it/mailman/listinfo/ntop-misc _______________________________________________ Ntop-misc mailing list [email protected] http://listgateway.unipi.it/mailman/listinfo/ntop-misc
