> -----Original Message----- > From: Steve O'Brien [mailto:obr...@velocent.com] > Sent: Monday, January 30, 2012 10:05 AM > To: e1000-devel@lists.sourceforge.net > Subject: Re: [E1000-devel] VFS vs MTU > > > Has anyone else encountered this problem? > > Sorry, my contact info is: > Steve O'Brien > obr...@velocent.com > Sr. Engineer > Velocent Systems
If the Intel 10Gig device you're is based on the 82599 controller then there is an errata on that device that prevents use of jumbo frames while in SR-IOV mode. You must disable SR-IOV if you want to use jumbo frames. The driver will not allow any parameter larger than 1500 for those devices when SR-IOV mode is enabled and that is why you are getting the invalid parameter error message. The errata will be fixed in future generations of Intel 10gig controllers. I apologize for the inconvenience. - Greg > > -----Original Message----- > From: Steve O'Brien [mailto:obr...@velocent.com] > Sent: Thursday, January 26, 2012 1:00 PM > To: 'e1000-devel@lists.sourceforge.net' > Subject: VFS vs MTU > > > Oh, I hope this isn't a dumb question, but I can't set the MTU to 4096 > using SR-IOV. > > I'm using the X520-SR2 dual 82599 NIC with RedHat 6.0. I use 'modprobe > ixgbe max_vfs=4,4`, then try to increase the MTU using 'ifconfig eth2 mtu > 4096', gives me the response `SIOCSIFMTU: Invalid argument`. > > The modprobe appears successful, dmesg is: > > Intel(R) 10 Gigabit PCI Express Network Driver - version 3.7.17-NAPI > Copyright (c) 1999-2011 Intel Corporation. > ixgbe 0000:13:00.0: PCI INT A -> GSI 18 (level, low) -> IRQ 18 ixgbe > 0000:13:00.0: setting latency timer to 64 > ixgbe: I/O Virtualization (IOV) set to 4 > ixgbe: 0000:13:00.0: ixgbe_check_options: FCoE Offload feature disabled > ixgbe 0000:13:00.0: irq 28 for MSI/MSI-X ixgbe 0000:13:00.0: irq 29 for > MSI/MSI-X ixgbe 0000:13:00.0: (PCI Express:2.5GT/s:Width x8) > 00:1b:21:8e:ae:e4 ixgbe 0000:13:00.0: eth2: MAC: 2, PHY: 15, SFP+: 5, PBA > No: E68785-003 ixgbe 0000:13:00.0: eth2: Enabled Features: RxQ: 1 TxQ: 1 > LRO ixgbe 0000:13:00.0: eth2: IOV: VF 0 is enabled mac 36:25:DD:F1:C6:DC > ixgbe 0000:13:00.0: eth2: IOV: VF 1 is enabled mac 3A:98:30:1A:89:9D ixgbe > 0000:13:00.0: eth2: IOV: VF 2 is enabled mac 42:7F:C3:60:78:60 ixgbe > 0000:13:00.0: eth2: IOV: VF 3 is enabled mac 46:70:37:00:FC:8C ixgbe > 0000:13:00.0: eth2: Intel(R) 10 Gigabit Network Connection ixgbe > 0000:13:00.1: PCI INT B -> GSI 19 (level, low) -> IRQ 19 ixgbe > 0000:13:00.1: setting latency timer to 64 > ixgbe: I/O Virtualization (IOV) set to 4 > ixgbe: 0000:13:00.1: ixgbe_check_options: FCoE Offload feature disabled > ADDRCONF(NETDEV_UP): eth2: link is not ready ixgbe 0000:13:00.0: eth2: > detected SFP+: 5 ixgbe 0000:13:00.1: irq 30 for MSI/MSI-X ixgbe > 0000:13:00.1: irq 31 for MSI/MSI-X ixgbe 0000:13:00.1: (PCI > Express:2.5GT/s:Width x8) 00:1b:21:8e:ae:e5 ixgbe 0000:13:00.1: eth3: MAC: > 2, PHY: 15, SFP+: 6, PBA No: E68785-003 ixgbe 0000:13:00.1: eth3: Enabled > Features: RxQ: 1 TxQ: 1 LRO ixgbe 0000:13:00.1: eth3: IOV: VF 0 is enabled > mac 8A:75:79:3D:91:45 ixgbe 0000:13:00.1: eth3: IOV: VF 1 is enabled mac > EA:DB:6E:21:CE:D2 ixgbe 0000:13:00.1: eth3: IOV: VF 2 is enabled mac > EE:22:8A:91:7A:AC ixgbe 0000:13:00.1: eth3: IOV: VF 3 is enabled mac > A2:92:0B:65:4A:24 ixgbe 0000:13:00.1: eth3: Intel(R) 10 Gigabit Network > Connection > ADDRCONF(NETDEV_UP): eth3: link is not ready ixgbe 0000:13:00.0: eth2: NIC > Link is Up 10 Gbps, Flow Control: RX/TX > ADDRCONF(NETDEV_CHANGE): eth2: link becomes ready ixgbe 0000:13:00.1: > eth3: detected SFP+: 6 ixgbe 0000:13:00.1: eth3: NIC Link is Up 10 Gbps, > Flow Control: RX/TX > ADDRCONF(NETDEV_CHANGE): eth3: link becomes ready > > > > -------------------------------------------------------------------------- > ---- > Try before you buy = See our experts in action! > The most comprehensive online learning library for Microsoft developers > is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, > Metro Style Apps, more. Free future releases when you subscribe now! > http://p.sf.net/sfu/learndevnow-dev2 > _______________________________________________ > E1000-devel mailing list > E1000-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/e1000-devel > To learn more about Intel® Ethernet, visit > http://communities.intel.com/community/wired ------------------------------------------------------------------------------ Try before you buy = See our experts in action! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-dev2 _______________________________________________ E1000-devel mailing list E1000-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/e1000-devel To learn more about Intel® Ethernet, visit http://communities.intel.com/community/wired
