Is there a known problem with the combination of Workstation 10.0.(1-.3) and RHEL6.5 (CentOS6.5, Scientific Linux 6.5, Kernel up to 2.4.32-431.23.3), Intel X540-AT2 hardware and the Intel ixgbe driver up to 3.21.2?
When Workstation 10 is starting a bridged network, the kernel shows messages of the kind of:
Aug 27 16:01:14 gh-vm01 kernel: WARNING: at net/core/dev.c:1907 skb_warn_bad_offload+0xc2/0xf0() (Tainted: G W -
)
Aug 27 16:01:14 gh-vm01 kernel: Hardware name: X9DRE-TF/X9DR7-TF
Aug 27 16:01:14 gh-vm01 kernel: ixgbe: caps=(0x3120cba0, 0x0) len=13210 data_len=13144 ip_summed=1
Aug 27 16:01:14 gh-vm01 kernel: Pid: 0, comm: swapper Tainted: G W -
2.6.32-431.23.3.el6.x86_64 #1
Aug 27 16:01:14 gh-vm01 kernel: Call Trace:
Aug 27 16:01:14 gh-vm01 kernel: ] ? ixgbe_get_drvinfo+0x7f/0xc0
Aug 27 16:01:14 gh-vm01 kernel: [] ? VNetBridgeSendLargePacket+0x1d/0x90
Aug 27 16:01:14 gh-vm01 kernel: [] ? VNetBridgeReceiveFromDev+0x310/0x420
Aug 27 16:01:14 gh-vm01 kernel: [] ? ixgbe_receive_skb+0x52/0x90
Aug 27 16:01:14 gh-vm01 kernel: [] ? ixgbe_poll+0x445/0x1760
Aug 27 16:01:14 gh-vm01 kernel: [] ? start_secondary+0x2ac/0x2ef
Aug 27 16:01:14 gh-vm01 kernel: --
and the network performance is going down by a factor of more than 2
Turning off rx and tx offload in the network driver seems to prevent the problem.
So it seems that the ixgbe driver for X540 network cards and Workstation 10 don't work together - is this a known problem?
Thank you in advance!
Gerhard Schneider
