Intel I350 - I;O Virtualization Features; Stateless Offloads;Performance Features; Remote Boot Options

I/O Virtualization Features
Features Benefits
Eight transmit (Tx) and receive (Rx) queue pairs per port • Supports VMware* NetQueue and Microsoft* VMQ
Flexible Port Partitioning:
32 Virtual Functions on Quad-port or 16 Virtual Functions on
Dual-port
• 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
Support for PCI-SIG SR-IOV specication • Up to 8 Virtual Functions per Port
Rx/Tx Round-Robin Scheduling • Assigns time slices in equal portions in circular order for Rx/Tx for balanced bandwidth allocation
Trafc Isolation • Processes or VMs can be assigned a dedicated VF with VLAN support
Trafc Steering • Ofoads sorting and classifying trafc in to VF or queues
VM to VM Packet forwarding (Packet Loopback) • On-chip VM-VM trafc enables PCIe* speed switching between VM
MAC and VLAN anti-spoong • Enables anti spoong lter on MAC addresses and VLAN for VFs.
Malicious driver detection • Monitors queues and VFs for malformed descriptors that might indicate a malicious or buggy driver.
Storm control • Limits to the broadcast or multicast trafc it can receive
Per-pool statistics, ofoads, and jumbo frames support • Each Queue Pair or Pool has its own statistics, off-loads and Jumbo support options
Independent Function Level Reset (FLR) for Physical and Virtual
Functions
• VF resets only the part of the logic dedicated to specic VF and does not inuence the shared port
IEEE 802.1q Virtual Local Area Network (VLAN) support with VLAN
tag insertion, stripping and packet ltering for up to 4096 VLAN
tags
• Adding (for transmits) and removing (for receives) of VLAN tags with no VM involvement
• Filtering packets belonging to certain VLANs
IEEE 802.1q advanced packet ltering • Lower processor utilization
Mirroring rules • Ability to reect network trafc to a given VM or VLAN based on up to four rules
Support for Simple VEPA • Support for external VM switching
VF Promiscuous modes • VLAN, unicast, multicast
Stateless Ofoads/Performance Features
Features Benefits
TCP/UDP, IPv4 checksum ofoads (Rx/ Tx/Large-send); Extended
Tx descriptors for more ofoad capabilities
• Improved CPU usage
• Checksum and segmentation capability extended to new standard packet type
IPv6 support for IP/TCP and IP/UDP receive checksum ofoad • Improved CPU usage
Tx TCP segmentation ofoad (IPv4, IPv6) • Increased throughput and lower processor usage
• Compatible with large-send ofoad
Transmit Segmentation Ofoading (TSO) • Large TCP/UDP I/O is segmented by to the device it to L2 packets according to the requested MSS
Interrupt throttling control • Limits maximum interrupt rate and improves CPU utilization
Legacy and Message Signal Interrupt (MSI) Modes • Interrupt mapping
Message Signal Interrupt Extension (MSI-X) • Dynamic allocation of up to 25 vectors per port
Intelligent interrupt generation • Enhanced software device driver performance
Receive Side Scaling (RSS) for Windows environment
Scalable I/O for Linux environments (IPv4, IPv6, TCP/UDP
• Up to eight queues per port
Support for packets up to 9.5K Bytes (Jumbo Frames) • Improves the system performance related to handling of network data on multiprocessor systems
• Enables higher and better throughput of data
Low Latency Interrupts • Based on the sensitivity of the incoming data, the controller can bypass the automatic moderation of time intervals between
the interrupts
Header/packet data split in receive • Helps the driver to focus on the relevant part of the packet without the need to parse it
PCIe v2.1 TLP Processing Hint Requester • Provides hints on a per transaction basis
Descriptor ring management hardware for Transmit and Receive • Optimized descriptor fetch and write-back for efcient system memory and PCIe bandwidth usage
Remote Boot Options
Features Benefits
Preboot eXecution Environment (PXE) ash interface support • Enables system boot up via the EFI (32 bit and 64 bit)
• Flash interface for PXE 2.1 option ROM
Intel® Ethernet iSCSI Remote Boot for Windows, Linux, and VMware • Enables system boot up via iSCSI
• Provides additional network management capability
Intel Boot Agent software:
Linux boot via PXE or BOOTP, Windows* Deployment Services, or
UEFI
• 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 Specication
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