+ This release of the ixgbe driver contains new code to enable users to use
+ Fiber Channel over Ethernet (FCoE) and Data Center Bridging (DCB)
+ functionality that is supported by the 82598-based hardware. This code has
+ no default effect on the regular driver operation, and configuring DCB and
+ FCoE is outside the scope of this driver README. Refer to
+ http://www.open-fcoe.org/ for FCoE project information and contact
+ e1000-eedc@lists.sourceforge.net for DCB information.
+
+ MAC and VLAN anti-spoofing feature
+ ----------------------------------
+ When a malicious driver attempts to send a spoofed packet, it is dropped by
+ the hardware and not transmitted. An interrupt is sent to the PF driver
+ notifying it of the spoof attempt.
+
+ When a spoofed packet is detected the PF driver will send the following
+ message to the system log (displayed by the "dmesg" command):
+
+ Spoof event(s) detected on VF (n)
+
+ Where n=the VF that attempted to do the spoofing.
+
+
+Performance Tuning
+==================
+
+An excellent article on performance tuning can be found at:
+
+http://www.redhat.com/promo/summit/2008/downloads/pdf/Thursday/Mark_Wagner.pdf
+
+
+Known Issues
+============
+
+ Enabling SR-IOV in a 32-bit Microsoft* Windows* Server 2008 Guest OS using
+ Intel (R) 82576-based GbE or Intel (R) 82599-based 10GbE controller under KVM
+ -----------------------------------------------------------------------------
+ KVM Hypervisor/VMM supports direct assignment of a PCIe device to a VM. This
+ includes traditional PCIe devices, as well as SR-IOV-capable devices using
+ Intel 82576-based and 82599-based controllers.
+
+ While direct assignment of a PCIe device or an SR-IOV Virtual Function (VF)
+ to a Linux-based VM running 2.6.32 or later kernel works fine, there is a
+ known issue with Microsoft Windows Server 2008 VM that results in a "yellow
+ bang" error. This problem is within the KVM VMM itself, not the Intel driver,
+ or the SR-IOV logic of the VMM, but rather that KVM emulates an older CPU
+ model for the guests, and this older CPU model does not support MSI-X
+ interrupts, which is a requirement for Intel SR-IOV.