Advertisement
I/O Virtualization Features
Features
Eight transmit (Tx) and receive (Rx) queue pairs per port
Flexible Port Partitioning:
32 Virtual Functions on Quad-port or 16 Virtual Functions on
Dual-port
Support for PCI-SIG SR-IOV specification
Rx/Tx Round-Robin Scheduling
Traffic Isolation
Traffic Steering
VM to VM Packet forwarding (Packet Loopback)
MAC and VLAN anti-spoofing
Malicious driver detection
Storm control
Per-pool statistics, offloads, and jumbo frames support
Independent Function Level Reset (FLR) for Physical and Virtual
Functions
IEEE 802. 1 q Virtual Local Area Network (VLAN) support with VLAN
tag insertion, stripping and packet filtering for up to 4096 VLAN
tags
IEEE 802. 1 q advanced packet filtering
Mirroring rules
Support for Simple VEPA
VF Promiscuous modes
Stateless Offloads/Performance Features
Features
TCP/UDP, IPv4 checksum offloads (Rx/ Tx/Large-send); Extended
Tx descriptors for more offload capabilities
IPv6 support for IP/TCP and IP/UDP receive checksum offload
Tx TCP segmentation offload (IPv4, IPv6)
Transmit Segmentation Offloading (TSO)
Interrupt throttling control
Legacy and Message Signal Interrupt (MSI) Modes
Message Signal Interrupt Extension (MSI-X)
Intelligent interrupt generation
Receive Side Scaling (RSS) for Windows environment
Scalable I/O for Linux environments (IPv4, IPv6, TCP/UDP
Support for packets up to 9.5K Bytes (Jumbo Frames)
Low Latency Interrupts
Header/packet data split in receive
PCIe v2. 1 TLP Processing Hint Requester
Descriptor ring management hardware for Transmit and Receive
Remote Boot Options
Features
Preboot eXecution Environment (PXE) flash interface support
Intel® Ethernet iSCSI Remote Boot for Windows, Linux, and VMware • Enables system boot up via iSCSI
Intel Boot Agent software:
Linux boot via PXE or BOOTP, Windows* Deployment Services, or
UEFI
4
Benefits
• Supports VMware* NetQueue and Microsoft* VMQ
• Virtual Functions (VFs) appear as Ethernet Controllers in Linux OSes that can be assigned to VMs, Kernel processes or
teamed using the Linux* Bonding Drivers
• Up to 8 Virtual Functions per Port
• Assigns time slices in equal portions in circular order for Rx/Tx for balanced bandwidth allocation
• Processes or VMs can be assigned a dedicated VF with VLAN support
• Offloads sorting and classifying traffic in to VF or queues
• On-chip VM-VM traffic enables PCIe* speed switching between VM
• Enables anti spoofing filter on MAC addresses and VLAN for VFs.
• Monitors queues and VFs for malformed descriptors that might indicate a malicious or buggy driver.
• Limits to the broadcast or multicast traffic it can receive
• Each Queue Pair or Pool has its own statistics, off-loads and Jumbo support options
• VF resets only the part of the logic dedicated to specific VF and does not influence the shared port
• Adding (for transmits) and removing (for receives) of VLAN tags with no VM involvement
• Filtering packets belonging to certain VLANs
• Lower processor utilization
• Ability to reflect network traffic to a given VM or VLAN based on up to four rules
• Support for external VM switching
• VLAN, unicast, multicast
Benefits
• Improved CPU usage
• Checksum and segmentation capability extended to new standard packet type
• Improved CPU usage
• Increased throughput and lower processor usage
• Compatible with large-send offload
• Large TCP/UDP I/O is segmented by to the device it to L2 packets according to the requested MSS
• Limits maximum interrupt rate and improves CPU utilization
• Interrupt mapping
• Dynamic allocation of up to 25 vectors per port
• Enhanced software device driver performance
• Up to eight queues per port
• Improves the system performance related to handling of network data on multiprocessor systems
• Enables higher and better throughput of data
• Based on the sensitivity of the incoming data, the controller can bypass the automatic moderation of time intervals between
the interrupts
• Helps the driver to focus on the relevant part of the packet without the need to parse it
• Provides hints on a per transaction basis
• Optimized descriptor fetch and write-back for efficient system memory and PCIe bandwidth usage
Benefits
• Enables system boot up via the EFI (32 bit and 64 bit)
• Flash interface for PXE 2. 1 option ROM
• Provides additional network management capability
• Enables networked computer to boot using a program code image supplied by a remote server
• Complies with the Pre-boot eXecution Environment (PXE) Version 2. 1 Specification
Advertisement
