Has anyone else encountered this problem?
Sorry, my contact info is:
Steve O'Brien
obr...@velocent.com
Sr. Engineer
Velocent Systems
-----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
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